261
Cellular modification and genetic transformation by exogenous nucleic acids : Molecular biology: international symposium. 0006 : Baltimore, MD, 08.06.72-09.06.72.
Book
262
International safeguards and nuclear industry /
Book
263
Energy, economic growth, and the environment : Papers pres. at a forum, Washington, D.C., 20.-21.4.1971.
Book
264
Molecular and cellular repair processes : Molecular biology: international symposium. 0005 : Baltimore, MD, 03.06.71-04.06.71.
Book
265
Essays in the History of Mechanics [E-Book] /
266
The mechanism of enzyme action, sponsored by the McCollum-Pratt Institute of Johns Hopkins University /
Book
267
American journal of mathematics  

ZB; 48. 1926 - 107. 1985
268
Johns Hopkins medical journal supplement  

ZB; 1. 1972
ZB; 3. 1974
IBG-1; 2. 1973
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