類似資料

1. 1 A directory of information resources in the United States : Federal Government : with a supplement of Government-sponsored information resources / National Referral Center for Science and Technology
2. 2 A directory of information resources in the United States: biological sciences
3. 3 Directory of special libraries and information centers / edited by Anthony T. Kruzas
4. 4 Information sources in biotechnology / A. Crafts-Lighty 1986
5. 5 A directory of information resources in the United States : general toxicology / compiled by National Referral Center for Science and Technology, Library of Congress for the Toxicology Information Program National Library of Medicine Toxicology Information Program