00294nam a22001097a 4500020001800000082001800018100001900036245006400055260003500119300001000154600002000164  a9781555812188  a576.15bVAR/E  aVarnam, Alan H  aEnvironmental microbiology/cAlan H Varnam & malcom G Evans  aWashington:bASM press,c2000.  a160p.  aEvans, Malcom G