The effect of partial sterilization by steam and formalin on the numbers of amoebae in field soil.
D000656:Amoeba; D005557:Formaldehyde / Q000494:pharmacology*; D012987:Soil; D013227:Steam / Q000494:pharmacology*; D013242:Sterilization
D012987:Soil; D013227:Steam; D005557:Formaldehyde
AMOEBA; FORMALDEHYDE/effects; SOIL; STEAM/effects