Methods of farm management investigations for improving farm product ivity /
Yang, Wei, 1907-
Methods of farm management investigations for improving farm product ivity / prepared by W. Y. Yang. - Rev. ed. - Rome : Food and Agriculture Organization of the United Nation , 1965. - xiii, 258 p. : ill. ; 23 cm. - FAO Agricultural development paper ; no.80. .
Includes bibliographical references : p.254-258.
Farm management research.--------
Methods of farm management investigations for improving farm product ivity / prepared by W. Y. Yang. - Rev. ed. - Rome : Food and Agriculture Organization of the United Nation , 1965. - xiii, 258 p. : ill. ; 23 cm. - FAO Agricultural development paper ; no.80. .
Includes bibliographical references : p.254-258.
Farm management research.--------