Mai, W. F., <br/><br/>
Pictorial key to genera of plant-parasitic nematodes / 
W. F. Mai ; with H. H. Lyon, photographer. 
 - 4th ed., rev. 
 - Ithaca, N.Y :  Comstock Pub. Associates,  1975. 
 - 219 pages :  illustrations ;  26 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 173-215. 
<br/><br/><label>ISBN: </label>0801409209 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant nematodes--Identification.<br/>Plant parasites--Identification.