[An odd creature in the toilet bowl].
Nissi
Ritva
R
Oulaskankaan sairaala Oulaistenkatu 5, 86300 Oulainen. ritva.nissi@hotmail.com
Itämies
Juhani
J
D000818:Animals; D005260:Female; D006801:Humans; D009835:Oligochaeta; D012722:Sewage / Q000469:parasitology*; D014038:Toilet Facilities / Q000592:standards*
D012722:Sewage