[Part 2: Biological Sciences] || Modulation of Cyclic AMP Metabolism by S-adenosylhomocysteine and S-3-deazaadenosylhomocysteine in Mouse LymphocytesThomas P. Zimmerman, Claus J. Schmitges, Gerald Wolberg, Robert D. Deeprose, Gail S. Duncan, Pedro Cuatrecasas and Gertrude B. Elion · Proceedings of the National Academy of Sciences of the United States of America · 1980

Two Empires or Three?Ernst Mayr · Proceedings of the National Academy of Sciences of the United States of America · 1998

The Objects of SelectionErnst Mayr · Proceedings of the National Academy of Sciences of the United States of America · 1997

Generalized Riemannian GeometryLuther P. Eisenhart · Proceedings of the National Academy of Sciences of the United States of America · 1962

On Monothetic GroupsPaul R. Halmos and H. Samelson · Proceedings of the National Academy of Sciences of the United States of America · 1942

Stochastic Speculative PricePaul A. Samuelson · Proceedings of the National Academy of Sciences of the United States of America · 1971

Supplement || Front MatterProceedings of the National Academy of Sciences of the United States of America · 1983

Supplement || Biological Sciences Subject IndexProceedings of the National Academy of Sciences of the United States of America · 1983

Supplement || Physical Sciences Subject IndexProceedings of the National Academy of Sciences of the United States of America · 1983