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Hegner, Robert William, 1880-1942.

Invertebrate zoology / [by] Robert W. Hegner [and] Joseph G. Engemann. - Second edition - xviii, 619 pages : illustrations ; 23 cm.

Includes bibliographies.

LCCN: 68010240

Subjects--Topical Terms:
Invertebrates.
Zoology.

LC Class. No.: QL362 / .H4 1968

Dewey Class. No.: 592