HEGNER, Robert W.
Invertebrate zoology / [by] Robert W. Hegner, Joseph G. Engemann - 2nd ed. - New York Macmillan pub. 1968 - xviii, 619 p.
Includes references & index.
45620
Invertebrates
592 / HEG
Invertebrate zoology / [by] Robert W. Hegner, Joseph G. Engemann - 2nd ed. - New York Macmillan pub. 1968 - xviii, 619 p.
Includes references & index.
45620
Invertebrates
592 / HEG