TY  - BOOK
AU  - Yang, W. Y.
TI  - Methods of Farm Management Investigations : for improving farm productivity / 
U1  - 338.17 
PY  - 1958///
CY  - .- Rome, United Nations
PB  - : Food and Agriculture Organization
KW  - Social Sciences
KW  - Economics
KW  - Farm Management
ER  -