000 00411nas0a22001690004500
001 27154
090 _a27154
100 _a20200127 frey50
101 _aeng
102 _aZA
200 0 1 _aCSIR Special Report
207 _aNº 31 (1965)-nº wat 1 (1970)
210 _aPretoria
_dNational Institute for Water Research
215 _cil.
_d30 cm.
300 _aOrigem IPIMAR
326 _aAnual
345 _a1965-1970