Ordovician vertebrates from Western United States / Robert H. Denison --

v.16:no.6(1967)

The Triassic reptile, Poposaurus / Edwin H. Colbert --

v.14:no.4(1961)

The phylogenetic and functional implications of the armor of the Dissorophidae / Robert E. DeMar --

v.16:no.3(1966)

Prehistoric men / by Robert J. Braidwood, Research Associate, Old World Prehistory; Associate Professor, Oriental Institute and Dept. of Anthropology, University of Chicago. Drawings by Susan T. Richert.

no.37(1948)

The sponges / by Robert von Lendenfeld.

v.42 (1915) text

Relationships of pocket gophers of the genus Geomys from the Central and Northern Great Plains / by Lawrence R. Heaney and Robert M. Timm.

no.74 (1983)

Studies in neotropical mammalogy : essays in honor of Philip Hershkovitz / edited by Bruce D. Patterson, Robert M. Timm.

n.s. no.39(1987)

Letter from Robert Winthrop to Loammi Baldwin, 1836 September 2

One-page handwritten letter from Robert Charles Winthrop regarding Baldwin's appointment as vice-president of the second Centennial Festival at Harvard.

List of the specimens of British animals in the collection of the British Museum.

pt.15 (1853) [Nomenclature of Diptera.I]

Ferns and fern allies of Guatemala. Robert G. Stolze.

n.s. no.12(1983)

Variation in Bornean frogs of the Amolops jerboa species group, with description of two new species / Robert F. Inger, Paul A. Gritis.

n.s. no.19(1983)