United States             EPA 220-F-94-004
                                                              Environmental Protection   April t994
                                                              Agency

                                                              Administration and Resources
                                                              Management (3404)
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                                                                              r Printed on recycled paper

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The Online Library System (OLS) is a
computerized list of bibliographic citations
compiled by the EPA library network. EPA
provides this menu-driven, user-friendly system
at no cost to support public access to
environmental information. The only charges
that will be incurred through use  of the system
are telecommunications charges.
OLS includes several related databases that can
be used to locate books, reports, articles, and
information on a variety of topics. The material
in OLS is updated every, two weeks, and can be
searched by numerous access points, such as
title, author, and keyword.

National    Citations and summaries on
Catalog    environmentally related topics
          encompassing biology, chemistry,
          ecology, and other basic sciences;.and
          EPA reports distributed through the
          National Technical Information
          Service.
Hazardous  Citations and summaries for key
Waste      materials on hazardous waste.
ACCESS   Over 300 entries for EPA and other
EPA       public sector information sources
          such as hotlines, clearinghouses,
          dockets, libraries, etc.
EFIN      Abstracts of case studies and contacts
          on environmental finance topics,
          including federal grant and loan
          programs, alternative financing
          mechanisms, and public-private
          partnerships.
Regional   Selected items owned by the
Files      Regional  Libraries.

For information about the Online Library
System, please contact the nearest EPA Library.
A list of the libraries is available on the system's
HELP Screen.
             Dial-In Access
• {:>'iV) 549-0720
 Use these transmission and format settings:
  300-9600 baud rate       Half Duplex
  Even Parity             7 data bits per character
'.  One Stop Bit
 To log-in
 Dial into the system. At the first system
 prompt, select IBMPSI. At the second prompt,
, select OLS.
; To Print
 Printing is available only through your
 telecommunications software.
To .Log-Off
 Type Q or QUIT at the system prompt.

 We encourage universities and institutions with
 Internet connections to access OLS using
 Internet links to EPA.
 EPA's Internet address (EPAIBM.RTPNC.EPA.GOV)
 At the first menu, select "Public Access."
 At the second menu, select "OLS."
 User Support
:Call EPA's National Computer Center for
 Technical system assistance (help with anything
that happens before you type OLS at the system
 prompt) at 1-800-334-2405, or (919) 541-7862
 (Outside the United States). Contact the EPA
Public Information Center for the OLS User
 Guide and other system documentation at
(202) 260-2080.

   EPA cannot be responsible for any
   telephone charges incurred by non-EPA
   users. It is the user's responsibility to
   release the telephone line connection.

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The OLS search options correspond to fields in
the various databases. To search for items with
information in a particular field, use the
following two-letter options:
AU
CL
      Enter the author's whole name, or if the
      author's complete name is not known,
      users may search with the surname, first
      name, or initials. Format is irrelevant;
      OLS searches all parts of the name
      separately.
      The format of the call number depends
      on the way it was originally entered; call
      numbers vary from one database to
      another within O.LS. It is always wise to
      end the call number search with a
      wildcard character "*". (See Search
      Tip®.)    '
      OLS searches all corporate source fields.
      Enter a whole or partial name.
      Enter a keyword or phrase which will be
      searched in all title, subject and abstract
      fields simultaneously. Use quotation
      marks if the phrase includes spaces.
      Enter the entire number, if known. Enter
      only the beginning letters of the report if
      searching for all  reports from a specific
      agency. Spaces and punctuation may be
      omitted, it is'wise to use a wildcard
      character "*" at  the end of the search
      statement. (See  Search Tip ©.)
      Enter a word, phrase or complete title,
      without articles such as "a" or "the". Use
      quotation marks if the phrase includes
      spaces.
      Enter a four-digit publication year. It is
      possible to use a wildcard character "*",
      but the resulting search will be
      extremely slow. (See Search.Tip ©.)
* Search options for individual databases may vary.
Use HELP screens to see search strategies
cs

KY




RN
TI
YR
€J  Use the wildcard character "*" to truncate a
    word or phrase.
    Example: TI = 'Hazard

©  Search numbers without leading zeros.
    Example: FIND "OCLC = 514174"

©  Search strings containing blanks MUST be
    enclosed in double quotation marks.
    Example: "John muir" or "QH104.M851988"

©  You may search for year of publication in
    the format YYYY for a specific year, or
  .  YYYY:YYYY for a range of years.
    Example: YR = 1990: YR = 1989:1991

©  When searching numeric fields such as the
    year of publication, you can search for a set
    of values defined by the following logical
    operators: Greater Than  (GT); Less Than-
    (LJ): Greater Than or Equal to (GE); or Equal 1
    to (EQ).

©  You may "stack" some commands.  .
    Example 1: H TI H AU will provide information ;|
    on Title searching.and then on author
    searching without returning to the Patron
    Menu in between.
    Example 2: TI = "silent spring" will begin the
    search with one step.
©  When searching using call numbers, it is
    wise to end the search with a wildcard "*"'
    because not all call numbers include the
    date.
    Example: CL=QH104*
©  When searching report numbers, spaces and ,|
    punctuation marks may be omitted from
    the search request. It is useful to use the
    wildcard "*" as the last character in the
    request,
    Example: eoo r 93015*

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