TY  - BOOK
AU  - Ritson,Christopher
TI  - Agricultural economics: principles and policy 
SN  - 0258969385 
AV  - S540.E25.R5 1977 
PY  - 1977///
CY  - New York : 
PB  - St. Martin's Press, 
KW  - Agriculture -- economic aspects
N1  - Includes bibliographical references and index
ER  -