July, 1930] 



Operating Costs of Grain Stores 



15 



o 



3 



10 



X 



o 



<D 

 O 





o3 



o3 

 &, 

 <U 

 03 



o, 



(V 



-.« 

 o 



3 

 m 



& 



0) 

 3 



O 

 -3 

 &, 



.53 bC 



3 d 



a; 03 



^ a 



3 «> 



3 a> 



