Waliszewski, S M Organochlorine pesticide residues in cow's milk and butter in Mexico. [electronic resource] - The Science of the total environment Dec 1997 - 127-32 p. digital Publication Type: Journal Article ISSN: 0048-9697 Standard No.: 10.1016/s0048-9697(97)00270-2 doi Subjects--Topical Terms: AgricultureAnimalsButterCattleEnvironmental ExposureEnvironmental MonitoringFood ContaminationHumansHydrocarbons, ChlorinatedInsecticides--analysisMexicoMilk--chemistry