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

v.16:no.6(1967)

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.

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)