Mohlenbrock, Robert H. <br/><br/>
Field office illustrated guide to plant species 
by Robert H. Mohlenbrock. 
 - Washington  Soil Conservation Service  1991. 
 - 1 v. (loose-leaf)  ill.  29 cm. 
<br/><br/><label>LCCN: </label>doc92000474  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trees--Identification.<br/>Forest flora--Identification.