TABLE 1.
INFORMATION SOURCES (modified from Waste Management, Inc., 1989)
GENERAL DATA SOURCES
Information
Source
Obtainable
Comments
Libraries
Earth science
Many of the types of information discussed
bibliographic indices
below can be obtained from libraries.
Excellent library facilities are available
at the U.S. Geological Survey offices (USGS)
in Reston, VA; Denver, CO; and Menlo Park,
CA.
Local university libraries can contain
good collections of earth science and
related information and typically are
repositories for Federal documents.
In
addition, local public libraries normally
have information on the physical and
historical characteristics of the
surrounding area.
Computer literature
Bibliographic indices
Perhaps one of the most useful and cost
searches
effective developments in the bibliographic
indexes has been the increased availability
of computerized reference searches.
On line
computer searches save significant time and
money by giving rapid retrieval of citations
of all listed articles on a given subject
and eliminate manual searching of annual
cumulated indexes.
A search is done by use
of keywords, author names, or title words,
and can be delimited by ranges of dates or a
given number of the most recent or oldest
references.
The average search requires
about 15 minutes of online searching and
costs about $50 for computer time and
offline printing of citations and abstracts.
Dialog
Accesses over 425 data
Provides indexes to book reviews and
Subscriptions and
bases from a broad scope
biographes; directories of companies,
information:
of disciplines including
people, and associations; and access to the
1 800 3 DIALOG.
such data bases as GEOREF
complete text of articles from many
and GEOARCHIVE.
newspapers, journals, and other original
sources.
Master Directory
The MD is a multidis 
MD is a free on line data information
(MD)
ciplinary data base that
service.
Data available include personnel
User Support Office
covers earth science
contact information, access procedures to
Suite 300
(geology, oceanography,
other data bases, scientific campaigns or
Hughes STX Corp.
atmospheric science),
projects, and other data sources.
7601 OraGlen Drive
space physics, solar
Greenbelt, MD 20771
physics, planetary
Access Procedures:
MD resides on a VAX at
(301) 513 1687
science, and astronomy/
NSSDC and may be reached by several
Span:
BLAND NSSDCA.
astrophysics.
It
networks.
MD is option #1 on the menu of
GSFC.NASA.GOV
describes data generated
NSSDC's On line Data Information Services
THIEMAN.NSSDCA.
by NASA, NOAA, USGS, DOE,
(NODIS) account.
From span nodes:
SET HOST
GSFC.NASA.GOV
EPA, and other agencies
NSSDA.
USERNAME:NSSDC (no password).
From
and universities, as well
Internet:
TELNET NSSDCA.GSFC.NASA.GOV or
as international data
TELNET 128.183.36.23.
bases.
Via Direct Dial:
Set modem to 8 bits, no
parity, 1 stop bit, 300,1200 (preferable),
or 2400 baud.
Dial (301) 286 9000 ENTER
NUMBER:
MD, CALL COMPLETE:
[CR], USERNAME:
NSSDC (no password).
For assistance or more
information, contact the MD User Support
Office (301) 513 1687.
A4 1
November 1992






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