Media type: E-Article Title: .beta.-Lactam antibiotics derived from nitrogen hetrocyclic acetic acids. 1. Penicillin derivatives Contributor: Edwards, M. L.; Bambury, R. E.; Ritter, H. W. imprint: American Chemical Society (ACS), 1977 Published in: Journal of Medicinal Chemistry Language: English DOI: 10.1021/jm00214a020 ISSN: 1520-4804; 0022-2623 Keywords: Drug Discovery ; Molecular Medicine Origination: Footnote: