Calkins, Gary N. <br/><br/>
The smallest living things  life revealed by the microscope 
Gary N. Calkins ... 
 - New York  The University Society  c1935. 
 - vii, 139 p. 
 - University series.  Protozoa. .
<br/><br/>"Bibliography p. : 117-118. 
<br/><br/><label>LCCN: </label>91072341 //r882 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microorganisms<br/>Protozoa<br/>Unicellular organisms.
<br/><br/><label>LC Class. No.: </label>QH274  / .C3 
<br/><br/><label>Dewey Class. No.: </label>578