TY - SER AU - Frenich,A.Garrido TI - Monitoring multi-class pesticide residues in fresh pruits and vegetables by liquid chromatography with tandem mass spectrometry N1 - YS2004 M12 D05 Sources - Journal of Chromatography A. Sources - 1048 (issue 2) 2004 : 199-206 ISSN - 0021-9673 ER -