Mollusca of the Ozarkian FaunaH. A. Pilsbry and James H. Ferriss · Proceedings of the Academy of Natural Sciences of Philadelphia · 1906

Mollusca of the Southwestern States. IIH. A. Pilsbry and J. H. Ferriss · Proceedings of the Academy of Natural Sciences of Philadelphia · 1906

Ashmunella, a New Genus of HelicesH. A. Pilsbry and T. D. A. Cockerell · Proceedings of the Academy of Natural Sciences of Philadelphia · 1899

Melaniidæ of the Panuco River System, MexicoH. A. Pilsbry and A. A. Hinkley · Proceedings of the Academy of Natural Sciences of Philadelphia · 1909

AN IMPORTANT COLLECTION OF MOLLUSCAPilsbry, H. A. · Science · 1892

AN UNUSUAL CRETACEOUS CIRRIPEDPilsbry, H. A. · Science · 1933

Note on a Southern PupaH. A. Pilsbry · Proceedings of the Academy of Natural Sciences of Philadelphia · 1890

On a New BulimulusH. A. Pilsbry · Proceedings of the Academy of Natural Sciences of Philadelphia · 1890

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