00333nam a2200121 a 450000500170000002000180001708200210003510000180005624500430007426000530011730000220017050000190019220251203090506.0  a9780582450226  a579.1709148bRIC  aRichards, BN.  aMicrobiology of terrestrial ecosystems  aNew YorkbLongman Scientific and Technicalc1987  axvi, 399p, 22 cm.  aIncludes index