How to know the Protozoa : a pictured-key for identifying the more common fresh water, marine, and parasitic Protozoa, with elementary discussions of the importance of each group and of interesting facts concerning them /
Jahn, Theodore Louis, 1905-
How to know the Protozoa : a pictured-key for identifying the more common fresh water, marine, and parasitic Protozoa, with elementary discussions of the importance of each group and of interesting facts concerning them / Theodore Louis Jahn and Francis Floed Jahn. - Dubuque : W. C. Brown , c1949 - 234 p. : illus. ; 22 cm. - Pictured-key nature series .
Includes index
Protozoa.
593 / JHA 1949
How to know the Protozoa : a pictured-key for identifying the more common fresh water, marine, and parasitic Protozoa, with elementary discussions of the importance of each group and of interesting facts concerning them / Theodore Louis Jahn and Francis Floed Jahn. - Dubuque : W. C. Brown , c1949 - 234 p. : illus. ; 22 cm. - Pictured-key nature series .
Includes index
Protozoa.
593 / JHA 1949