The descent of man, and selection in relation to sex. By Charles Darwin.

1

The descent of man, and selection in relation to sex / by Charles Darwin.

2

Relationships among the living genera of beaked whales with classifications, diagnoses, and keys. a selection from the collection of Mr. and Mrs. Harold G. Duckworth. [Exhibition] December 1, 1968-January 12, 1969.

v.53:no.4(1968)

Report of the Director to the Board of Trustees for the year ... / Chicago Natural History Museum.

1958

Report of the Director to the Board of Trustees for the year ... / Chicago Natural History Museum.

1959

Annual report of the Director to the Board of Trustees for the year ... / Field Museum of Natural History

12, no. 1

Annual report of the Director to the Board of Trustees for the year ... / Field Museum of Natural History

12, no. 3

Reports of the Director ... / Experimental Farms.

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