TY  - SER
AU  - Schenck,F.J.
AU  - Lehotay,S.J.
TI  - Does further clean-up reduce the matrix enhancement effect in gas chromatographic analysis of pesticide residues in food?
ISSN  - 0021-9673
Sources  - Journal of Chromatography A.
Sources  - 868 (1) 2000 : 51-61
ER  -