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. 
 - 258 p. ;  23 cm. 
 - FAO Agricultural Development Paper ;  no.80 .
<br/><br/><label>LCCN: </label>65-9405 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Farm management