593.1
C
Calkin, Gary Nathan, 1869- ed.
Protozoa in biological research, edited by Gary N. Calkins and Francis M. Summers. New York, Columbia university press, 1941.
xii, 1148 p. incl. ilus., tables diagrs. iv pl.on 2 1. 23cm.
Papers prepared by a group of specialists, each providing a  chapter on the subject in-
which he is best known. of Pref.
"Literature cited" at end of each chapter.