TY  - JOUR 
T1  - Bean cultivation in a subsistence farming system in the northeast of São Paulo state - Brazil
JO  - Scientia Agricola
A1  - Oliveira, Wladecir Salles de
A1  - Tsai, Siu Mui
SN  - 0103-9016
UL  - 10.1590/S0103-90162001000200008
VL  - 58 
Y1  - 2001
PB  - Brasil 
ER  -