Norris M. Ross, Ronald J. Wright Postlewait, S.N. <br/><br/>
Methods of Investigation 
/ by S.N. Postlewait 
 - Philadelphia :  W.B. Saunders Company,  1976 
 - 22 p. 
<br/><br/><label>ISBN: </label>0-7216-6376-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology
<br/><br/><label>Dewey Class. No.: </label>570  / POS-M