000 00309nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aU.S.Dept of Interior Bureau of Reclamation
245 0 _aEngineering Geology field Manual
260 _bScientific Pub
260 _c1991
365 _b400
942 _cBK
999 _c218093
_d218093