000 00563nam a2200241Ia 4500
003 OSt
005 20220912151437.0
006 a|||||r|||| 00| 0
007 ta
008 220909b |||||||| |||| 00| 0 eng d
024 _a49575
037 _cTextual
040 _aCSL
_beng
_cCSL
041 _aeng
082 _aH422, L23-;1
100 _aUNESCO
245 0 _cUNESCO
_aTeaching aids in hydrology
260 _c1972
300 _a64p.
_ccm.
650 _aExternal dynamic
942 _hH422, L23-;1
_cTEXL
_2CC
999 _c68809
_d68809