Jahn, Theodore Louis, How to know the protozoa / Theodore Louis Jahn, Eugene Cleveland Bovee, Frances Floed Jahn. - 2d ed. - Dubuque, Iowa : W. C. Brown Co., c1979. - xi, 279 p. : ill. ; ISBN: 069704758X. 0697047598 Subjects--Topical Terms: Protozoa--Identification. LC Class. No.: QL366 / .J3 1979 Dewey Class. No.: 593/.1/012