A preliminary study of retention of hair, feathers or egg shells in the digestive tracts of certain predatory birds and mammals :
submitted in partial fulfillment for the degree of Master of Forestry ... /
by Willet Wandell.

Description

Main Author

Wandell, Willet N.

Related Names

University of Michigan. School of Forestry and Conservation.

Language(s)

English

Published

1939.

Subjects

Mammals > Mammals / Michigan > Mammals / Michigan / Food.
Birds > Birds / Michigan > Birds / Michigan / Food.

Note

Submitted in 1939; degree granted in June, 1940.

Physical Description

64 leaves : ill.

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