TY  - BOOK
AU  - Forbes, W. H. S.
AU  - Woolfenden, D.
TI  - Mechanisation economics and social considerations
U1  - 330.9 
PY  - 1974///
CY  - [Durblin]
PB  - [s.n]
KW  - Economic conditions
KW  - Social conditions
ER  -