TY  - BOOK
AU  - Ritson,Christopher
TI  - Agricultural economics: principles and policy 
SN  - 0258969385 :
AV  - HD1411 .R48 1977b
PY  - 1977///
CY  - London
PB  - Crosby Lockwood Staples
KW  - Agriculture
KW  - Economic aspects
KW  - Agriculture and state
ER  -