TY  - BOOK
AU  - Padfield Harland
AU  -  Martin William E
TI  - Farmers workers and machines:  Technological and so   
U1  - X9(J):9.7342.N6, K5 
PY  - 1965///
CY  - Tucson
PB  - University of Arizona Press       
KW  - Labour
ER  -