Ehrich, Paul R. Richard W. Holm, Dennis R. Parnell <br/><br/>
The Process of Evolution 
/ by Paul R. Ehrich 
 - 2nd ed. 
 - New  Delhi :  McGraw-Hill,  1974 
 - 361 p. 
<br/><br/><label>ISBN: </label>0-07-019138-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Evolution
<br/><br/><label>Dewey Class. No.: </label>581.3  / EHR-T2