000 00320 a2200133 4500
080 _a55
_bB 552 E
245 1 _aEnvironmental geology
_cedited by F. Betz
260 _aPennsylvania
_bDowden Hutchinson & Ross
_c1975
650 _aGeology
700 _aBetz, F., ed.
100 _a
_d
300 _a390 p.
901 _a131180
999 _c69371
_d69371