TY  - BOOK
AU  - Barkley, Andrew
AU  - Barkley, Paul W. (jt. auth)
TI  - Principles of agricultural
SN  - 9781138914100
U1  - 338.1 
PY  - 2016///
CY  - New York
PB  - Routledge, 
KW  - Agriculture - Economic aspects - United States
ER  -