schefler,willim c <br/><br/>
Biology,principles and issues / 
willim c schefler 
 - massachusetts:  Addison wesley,  1976 
 - 370p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology Life 
<br/><br/><label>Dewey Class. No.: </label>574 SCB