Yang, Wei Y. <br/><br/>
Method of farm management investigations for improving farm productivity 

 - Rome  Food and Agriculture Organisation of the United Nations (FAO)  1958 
 - xiii,258p.  23cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Farm management research
<br/><br/><label>LC Class. No.: </label>S401.U6A13 No.80