[A bacteriological and helminthological investigation on a sewage-irrigated area in Beijing suburb].
D001200:Ascaris / Q000302:isolation & purification*; D002681:China; D004926:Escherichia coli / Q000302:isolation & purification; D005516:Food Microbiology; D006801:Humans; D010270:Parasite Egg Count; D012475:Salmonella / Q000302:isolation & purification*; D012722:Sewage / Q000009:adverse effects*; D012987:Soil; D014504:Urban Health; D014675:Vegetables
D012722:Sewage; D012987:Soil