Hegner, Robert William, 1880-1942.
Invertebrate zoology [by] Robert W. Hegner [and] Joseph G. Engemann. - 2d ed. - New York, Macmillan [1968] - xviii, 619 p. illus. 23 cm.
Includes bibliographies.
68010240
Invertebrates.
QL362 / .H4 1968
592
Invertebrate zoology [by] Robert W. Hegner [and] Joseph G. Engemann. - 2d ed. - New York, Macmillan [1968] - xviii, 619 p. illus. 23 cm.
Includes bibliographies.
68010240
Invertebrates.
QL362 / .H4 1968
592