TY  - BOOK
AU  - Ross, Robert Cooke.
TI  - An introduction to agricultural economics
U1  - 338.1 
PY  - 1951///
CY  - New York
PB  - McGraw-Hill
KW  - Agricultura
KW  - Aspectos económicos
KW  - Aspectos economicos
KW  - E.U.A
ER  -