TY  - BOOK
AU  - Winkelman,Don
TI  - The traditional farmer: maximization and mechanization 
U1  - 338.1 
PY  - 1972///
CY  - Paris
PB  - Development Centre of the Organisation for Economic Co-operation and Development
KW  - Agriculture
KW  - Labor productivity
KW  - Economic aspects
KW  - Mathematical models
KW  - Farm mechanization
KW  - Family farms
KW  - Mexico
N1  - Bibliography : p. 93
ER  -