000 00347nam a22001577a 4500
003 OSt
020 _a0854047042
082 _a574.192
245 _aHumic Substances structures, properties and uses
260 _bE.A.Ghabbour
502 _d1998
650 _aproperties and uses
700 _aRS.C
700 _aDavies G.
942 _2ddc
_cB
999 _c1992706
_d1992706