236 TJie Potato 



Grubb, E. H., and Guilford, W. S. 



1912. The Potato. N. Y. (Doubleday, Page & Co.), pp. 111-118. 



KOHLER, A. p. 



1909. Potato Experiments and Studies at University Farm. 

 Minn. Bui. 118. 

 Macoun, W. T. 

 The Potato and its Culture. Central Expt. Farms, Bui. 49. 



