Vale, Thomas R. <br/><br/>
Plant and people:   vegetation change in North America 

 - Washington, D.C:  A.A.G,  1982. 
 - 88p.:  ill.;  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany<br/>North America<br/>Ecology<br/>Vegetation dynamics<br/>North America
<br/><br/><label>LC Class. No.: </label>IRA QK110.V34