000 00279pam a2200109a 44500
082 _aTR
_bIC-7756
100 _aP. E. Carman
245 1 _aResearch and technologic work on coal and related investigations,1954
260 _a
_b
_c
700 _aL. D. Caldwell
997 _aTR5352 C
999 _c405450
_d405450