00397nam a2200157 a 450000100080000000500110000800800410001902000180006010000200007824500480009826000290014630000100017570000180018570000190020370000170022213361412008-05-31       1989    bl uuuu      00u1 u    #d  a0-471-92279-X1 aHAYES, M. H. B.  aHumic substances II in search of structure.  aNew York: J. Wileyc1989  a764p.1 aMACCARTHY, P.1 aMALCOLM, R. L.1 aSWIFT, R. S.