Scagel, Robert Francis,  1921- <br/><br/>
An evolutionary survey of the plant kingdom / 
[by] Robert F. Scagel [and others]. 
 - 658pages :  illustrations ;  27cm. 
 - Wadsworth botany series. .
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany.
<br/><br/><label>LC Class. No.: </label>QK97 SCA