000 00311 a2200133 4500
082 _a551.48
_bUn3
245 1 _aINTERNATIONAL LEGAND FOR HYDROGEOLOGICAL MAPS
260 _a
_bUnesco
_c1970
300 _a101
440 _aPublication No.
_v98
650 _aHydrogeology
964 _gCIRC
997 _aA23205 C
999 _c460231
_d460231