TY  - JOUR 
T1  - Vegetative and reproductive development of Costa Rican weedy rice compared with commercial rice (Oryza sativa)
JO  - Planta Daninha
A1  - Sánchez-Olquín, E.
A1  - Arrieta-Espinoza, G.
A1  - Espinoza Esquivel, A.M.
SN  - 0100-8358
UL  - 10.1590/S0100-83582007000100002
VL  - 25 
Y1  - 2007
PB  - Brasil 
ER  -