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College zoology [by] Robert W. Hegner [and] Karl A. Stiles.
Publication info: New York,Macmillan[1959]
College zoology, by Robert W. Hegner.
Publication info: New York,The Macmillan company,1912.
The germ-cell cycle in animals, by Robert W. Hegner ...
Publication info: New York,The Macmillan company,1914.
Host-parasite relations between man and his intestinal Protozoa, by Robert Hegner ...
Publication info: New York,The Century Co.[c1927]
Practical zoology, by Robert W. Hegner ...
Publication info: New York,The Macmillan company[c1915]
Problems and methods of research in protozoology... edited by Robert Hegner...and Justin Andrews...
Publication info: New York,The Macmillan company,1930.