Hawkes, J. G.  1915- <br/><br/>
The diversity of crop plants / 
J.G. Hawkes. 
 - Cambridge, Mass. :  Harvard University Press,  1983. 
 - vi, 184 p. 
<br/><br/> "Based on the John M. Prather lectures in biology... Harvard University... April 1977"--P. vi. 
<br/><br/><label>ISBN: </label>067421286X. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Field crops--Varieties.<br/>Germplasm resources, Plant.<br/>Plant varieties.<br/>Plants, Cultivated--Evolution.<br/>Field crops--Germplasm resources.<br/>Field crops--Evolution.