Books by Robert L. Usinger

Cover of Elements of zoology

Elements of zoology

by Tracy Irwin Storer, Robert L. Usinger, James Willard Nybakken, Robert C. Stebbins

1955
Cover of Aquatic insects of California

Aquatic insects of California

by Robert L. Usinger

1956
Cover of The life of rivers and streams

The life of rivers and streams

by Robert L. Usinger

1967
Cover of Sierra Nevada natural history

Sierra Nevada natural history

by Tracy Irwin Storer, Robert L. Usinger, David Lukas

1963
Cover of Monograph of Cimicidae

Monograph of Cimicidae

by Robert L. Usinger

1966

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