TY  - BOOK
AU  - Clark Colin
AU  -  Haswell Margaret
TI  - Economics of subsistence agriculture
SN  - 333116585
U1  - X9(J), K4; L0 
PY  - 1970///
CY  - London
PB  - Macmillan UK         
KW  - Agricultural Industry
N1  - .Macmillan student editions
ER  -