TY  - JOUR 
T1  - Productivity growth and technological progress in the Brazilian agricultural sector
JO  - Pesquisa Operacional
A1  - Pereira, Marcelo Farid
A1  - Silveira, João Serafim Tusi da
A1  - Lanzer, Edgar Augusto
A1  - Samohyl, Robert Wayne
SN  - 0101-7438
UL  - 10.1590/S0101-74382002000200003
VL  - 22 
Y1  - 2002
PB  - Brasil 
ER  -