000 00274nam a2200109Ia 4500
008 190829s9999||||xx |||||||||||||| ||und||
100 _aCantrill, T. C.
245 0 _aCoal Mining
260 _bCambridge University Press
_aCambridge
_c1914
650 _aCoal Mining
942 _cBK
999 _c9689
_d9689