共 13 条
[1]
BIENIAWSKI ZT, 1967, THESIS U PRETORIA
[2]
BIENIAWSKI ZT, 1967, MEG569 COUNC SCIENT
[3]
DENKHAUS HG, 1962, J S AFR I MIN METALL, V63, P59
[4]
EVANS I, 1961, COLLIERY ENG, V38, P123
[5]
Evans I., 1961, COLLIERY ENG, V38, P75
[6]
Evans I., 1961, COLLIERY ENG, V38, P172
[7]
GADDY FL, 1956, 112 VA POL EXP STA T, P63
[8]
GREENWALD HP, 1941, RI3575 US BUR MIN RE
[9]
GREENWALD HP, 1939, TP605 US BUR MIN REP
[10]
Holland C.T., 1964, P 6 S ROCK MECH, P450