000 003220000a22001330004500
245 _aStandardization in hydrology and related fields
110 _aWorld Meteorological Organization
260 _aGeneva
_bWMO
_c1973
440 _aWMO report
440 _aNo.18
080 _a556.01
_bW6
041 _aEN
942 _cBK
999 _c110746
_d110746