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040 _aDLC
_cOT
_dOCoLC
_dPBfG
_dOCoLC
_dDLC
042 _apremarc
050 0 0 _aQE157
_b.A83
086 0 _aPY G345/4.3 G1
_2padocs
100 1 _aAshley, Geo. H.
_q(George Hall),
_d1866-
245 1 2 _aA syllabus of Pennsylvania geology and mineral resources /
_cby George H. Ashley.
260 _aHarrisburg :
_bDepartment of internal affairs, Topographic and geologic survey,
_c1931.
300 _a160 p. incl. ill., maps, tables, diagrs. :
_bII pl. (fold. col. map, fold. tab.) ;
_c23 cm.
490 1 _aPennsylvania Geological survey, 4th (1919- ) Bulletin G1
500 _a"Publications of the present [Pennsylvania] Geological survey": p. 147-150.
500 _a"Publications of the second Geological survey": p. 152-154.
500 _a"List of U. S. Geological survey publications on Pennsylvania": p. 155-158.
650 0 _aGeology
_zPennsylvania.
650 0 _aMines and mineral resources
_zPennsylvania.
650 0 _aGeology
_zPennsylvania
_vBibliography.
830 0 _aBulletin G ;
_v1.
999 _c26889
_d26889