Johansen, Donald Alexander <br/><br/>
PLant Microtechnique 
Donald Alexander Johansen 
 - First 
 - New York and London  McGraw-Hill Book Company, Inc.  1940 
 - xi,ill.,523 
<br/><br/> Zb mean Botany Page 500-509 (Acc. No. Zb1-Zb343) & Page 578-581 (Acc. No. Zb344-Zb468) 
<br/><br/><label>Dewey Class. No.: </label>Zb456