共 50 条
- [22] ROADWAY FORMATION IN BRITISH COAL-MINES TRANSACTIONS OF THE INSTITUTION OF MINING AND METALLURGY SECTION A-MINING INDUSTRY, 1986, 95 : A61 - A70
- [23] SARDINIANS AND SICILIANS IN THE COAL-MINES OF LORRAINE ANNALES DE GEOGRAPHIE, 1963, 72 (391): : 272 - 302
- [27] Air pressure economy in coal-mines ZEITSCHRIFT DES VEREINES DEUTSCHER INGENIEURE, 1922, 66 : 354 - 355