TY  - BOOK
AU  - Perry F Philipp; W. R. Schmehl; W R Schmehl; W. W. Shaner
TI  - Readings In Farming Systems Research And Development
SN  - 9780429303845
PB  - Taylor and Francis
UR  - http://www.taylorfrancis.com/books/9780429303845
ER  -