TY  - BOOK
AU  - Shaner, W.W                                                 
AU  - Philipp, P.F
AU  - Schmehl, W.R
TI  - Farming Systems Research and Development                                                                                
SN  - 0-86531-425-x
PY  - 1982///
PB  - Westview Press                                              
KW  - Farming system - Research
ER  -