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024 _a30450
037 _cTextual
040 _aCRL
_cCRL
_beng
041 _2eng
_aeng
082 _aHZ.3,d, E9.3-;1
245 0 _aInstitution of mining and metallurgy
260 _aLondon
_bInstitution of mining and Mettalurgy
_c1919
300 _a95p.
_ccm.
650 _aGEOLOGY
942 _hHZ.3,d, E9.3-;1
_cTEXL
_2cc
999 _c962931
_d962931