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Escherichia coli O157
Lettuce
Salmonella
Spinacia oleracea
Plant Leaves
Food Contamination
Food Microbiology
Soil Microbiology
Water Microbiology
Microbial Colony Count
Manure
Vegetables
Soils
Consumer Product Safety
Food Handling
Temperature
Time Factors
Hydrogen-Ion Concentration
Agriculture
Disinfectants
Co-Publications
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