Mineral assemblages and the chemical history of chondritic meteorites / [by] Robert F. Mueller -- and Edward J. Olsen --.

v.16:no.15(1969)

New Pennsylvanian lungfishes from Illinois / Robert H. Denison, Curator, Fossil Fishes.

v.12:no.12(1969)

Middle Devonian fishes from the Lemhi Range of Idaho / [by] Robert H. Denison --

v.16:no.10(1968)

New Silurian Heterostraci from southeastern Yukon / Robert H. Denison. Intro. by H.R. Hovdebo, A.C. Lenz [and] E.W. Bamber.

v.14:no.7(1963)

Cardipeltis; an early Devonian agnathan of the order Heterostraci / Robert H. Denison.

v.16:no.4(1966)

Early Devonian lungfishes from Wyoming, Utah, and Idaho / [by] Robert H. Denison --

v.17:no.4(1968)

House plants / by Robert Van Tress.

no.20(1937)

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)