ID:DA12135437
United States. Library of Congress. National Referral Center
Library of Congress. Science and Technology Division. National Referral Center
Library of Congress. National Referral Center
NRC
National Referral Center for Science and Technology (U.S.)
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Science and Technology Division, National Referral Center
Library of Congress 1974 Rev. ed
Available at 4 libraries
compiled by the National Referral Center ; in consultation with the interagency Ad Hoc Group on Information Analysis Centers
Library of Congress 1974 3rd ed
Available at 1 libraries
Library of Congress 1973 Rev. ed
: pbk
Science and technology division National Referral Center
Library of Congress 1972
compiled by National Referral Center for Science and Technology, Library of Congress for the Toxicology Information Program, National library of medicine
Library of Congress , For sale by the Supt. of Docs., U.S. G.P.O. 1969
National Referral Center for Science and Technology
Library of Congress 1967
Available at 3 libraries
The Library of Congress [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] [1965]
Library of Congress, National Rferral Center for Science and Technology 1965
Available at 7 libraries