50 
BULLETIN 21, U. S. DEPAKTMENT OF AGEICULTUEE. 
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Total 
cost per 
pound 
of gain . 
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CO tr^rH co io 
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CO CO CO CO CO 
1>- t^ COCO CO 
Cost of 
labor 
per 
pound 
of gain. 
?3Kx ; x , 3 
00 CO CO CO CO 
IO CO t^ CO CO 
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rH O X CO 1*1 
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6 
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Total 
cost of 
feed per 
pound 
of gain. 
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t^cOOiOiO 
to *o o- io »o 
CO CO io tr^ rH 
Grain 
per 
pound 
of gain. 
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,^rH TOOCON 
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