Lines, Judy Longley. <br/><br/>
Principles of biosystematics / 
Judy Longley Lines and Thomas R. Mertens. 
 - 1st ed. 
 - Chicago :  Educational Methods,  1970 
 - 137 p. :  ill. ;  21 cm. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biosystematics
<br/><br/><label>Dewey Class. No.: </label>574  / LIP