July. 19301 



Operating Costs of Grain Stores 



29 





O 



■TS 



o 

 O 



«2 



o 



c 



•to 



o 

 < 



EC 



o 



a 



o 



a: 

 a;! 



a: 



a 



CO 



to 



C 



'5c 



c3 



02 



o 



a 



