Yang, W. Y. <br/><br/>
Methods of farm management investigations for improving farm productivity / 
prepared by W.Y. Yang. 
 - Rev. ed. 
 - Rome :  Food and Agriculture Organization of the United Nations,  1965. 
 - FAO agricultural development paper ;  no. 80 .
<br/><br/>Bibliography: p. [254]-258. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Farm management.