Bayer, Frederick M. <br/><br/>
The free-living lower invertebrates / 
by Frederick M. Bayer and Harding B. Owre 
 - New York :  MacMillan,  1968 
 - viii, 229 p. :  ill. ;  26 cm. 
<br/><br/>Bibliography : p. 205 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invertebrates