Needham, James G.   1868-1956. <br/><br/>
A guide to the study of fresh-water biology :   with special reference to aquatic insects and other invertebrate animals and phyto-plancton /  
by James G. Needham and Paul R. Needham. 
 - 4th ed. 
 - Ithaca, New York :   Comstock,   1941 [c1938]. 
 - 88 p. :   il. 
<br/><br/><label>LCCN: </label>38014423  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biologia de água doce.<br/>Insetos aquáticos.
<br/><br/><label>Dewey Class. No.: </label>574.52632