TY  - JOUR 
T1  - Mass spectrometric analyses in agriculture and natural product research
JO  - Brazilian Journal of Physics
A1  - Barofsky, Douglas F.
SN  - 0103-9733
UL  - 10.1590/S0103-97331999000300006
VL  - 29 
Y1  - 1999
PB  - Brasil 
ER  -