Campbell, John Durward,  1905- <br/><br/>
Costs of ginning cotton by cooperatives at single-gin and two-gin plants :  California and Texas / 
John Durward Campbell 
 - Washington, D. C. :  Farmer Cooperative Service, United States Department of Agriculture,  1964 
 - iv, 31 p. :  ill. ;  26 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cotton gins and ginning--Costs<br/>Agriculture, Cooperative
<br/><br/><label>Dewey Class. No.: </label>334.6830973