000
002810000a22001210004500
245
_a
Guide to hydrological practice
110
_a
World Meteorological Organization
250
_a
3d ed.
260
_a
Geneva
_b
WMO
_c
1974
080
_a
556(026)
_b
W6
041
_a
EN
942
_c
BK
999
_c
110738
_d
110738