Rojana Smatkitborihan Keawjam <br/><br/>
The apple snails of Thailand (Mollusca  Gastropoda  Pilidae) 
by Rojana Smatkitborihan Keawjam 
 - Ann Arbor  University of Michigan  1986 
 - 197 p. : ill. ; 21 cm. 
<br/><br/>Thesis (Ph. D) - University of Michigan, 1986 
<br/><br/>p. 193-197 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Planaxide