Classroom NotesParker, F. D.; Wallace, A. D.; Levine, Norman; Ogilvy, C. S.; Yates, Robert C.; Owens, Robert H.; Ledley, Robert S. · The American Mathematical Monthly · 1960

A Computer Communication System in the Poison Control CenterKwok, Robert H. M.; Ledley, Robert S. · Clinical Toxicology · 1968

Boundary extraction from coarsely or irregularly scanned imagesShinichi Tamura; Robert S. Ledley; Louis S. Rotolo · 1983

Call for papersRobert S. Ledley · 1980

Call for papersRobert S. Ledley · 1984

Call for papersRobert S. Ledley · 1985

Call for papersRobert S. Ledley · 1985

Call for papersRobert S. Ledley · 1986

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