[Footnotes]

[Footnotes]
1
Booth's suggested method in How to Know the Mammals, pp. 23-24.

Bibliography

Bibliography
Benton and Werner, Manual of field biology and ecology, Burgess Publishing Company, Minne- apolis, 1961.
Benton
Manual of field biology and ecology
1961
Booth, E., How to know the mammals, Wm. C. Brown Company, Dubuque, Iowa, 1949.
Booth
How to know the mammals
1949
Morholt, E., P. F. Brandwein and A. Joseph, A sourcebook for the biological sciences, New York, N.Y., 1958.
Morholt
A sourcebook for the biological sciences
1958
Welch, Paul, Limnology, McGraw-Hill Book Com- pany, New York, N. Y., 1952.
Welch
Limnology
1952
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