Hawkes, J.G. <br/><br/>
The potatoes of Argentina, Brazil, Paraguay and Uruguay - A biosystematic study. Annals of Botany Memoir No. 3 

 - Oxford  Oxford University Press  1969 
 - 525+150 ill. 
<br/><br/><label>Subjects--Index Terms: </label>POTATO SOLANUM SOUTH AMERICA BIOSYSTEMATICS 
<br/><br/><label>Dewey Class. No.: </label>635.21