TY  - BOOK
AU  - Collinson, M. P.
AU  - Collinson,M.P.
TI  - History of farming systems research 
SN  - 0851994059 (alk. paper)
U1  - 630.72 
PY  - 2000///
CY  - LON
PB  - C.A.B. International
KW  - Agricultural systems
UR  - http://www.loc.gov/catdir/enhancements/fy0606/99042827-d.html
UR  - http://www.loc.gov/catdir/enhancements/fy0606/99042827-t.html
ER  -