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040 _aJPS
090 0 0 _aHP 22 551.49(595) DID
110 _aDID.
_eissuing body
245 0 _aRIVER WATER QUALITY SAMPLING 1981
260 _aK. Lumpur : The Publication Unit, Min. of Agriculture,
_c198
300 _a16p ; illus.
440 _aHydrological procedure ; no.22
546 _aENG
650 1 0 _aHYDROLOGY - WATER QUALITY.
650 2 0 _aSAMPLING - SURFACE WATER.
942 _cMONO
990 _a1981
999 _a01716
_a551.49(595) DID
_aVIRTUA(5
_c2956
_d2956
003 JPS