[The school sponge--an indicator of fecal circulation in the classroom].
D004755:Enterobacteriaceae / Q000302:isolation & purification*; D005506:Food Contamination; D005511:Food Handling; D006225:Hand / Q000382:microbiology*; D006796:Household Work; D006801:Humans; D012574:Schools; D015022:Yugoslavia
Skolska spuzva--indikator fekalne cirkulacije u razredu.