00278naa a2200109 a 450000100080000000500110000800800410001910000200006024500380008026000090011877300410012716117581995-06-27       1982    bl ---       0--  u    #d1 aWILLIAMS, S. T.  aAre antibiotics produced in soil?  c1982  tPedobiologiagv.23, p.427-435, 1982.