共 15 条
[1]
BURRELL, 1926, BUR MINES B, V197
[2]
CASALE L, 1929, Patent No. 1734559
[3]
FISCHER F, 1929, 6125 BUR MIN
[4]
Fischer F., 1928, BRENNST CHEM, V3, P39
[5]
GLUUD W, 1930, KOHLENTECHNIK H WASS
[6]
I G FARBENINDUSTRIES, 1930, Patent No. 323855
[7]
I G FARBENINDUSTRIES, 1928, Patent No. 300328
[8]
I G FARBENINDUSTRIES, 1928, Patent No. 288662
[9]
I G FARBENINDUSTRIES, Patent No. 279072
[10]
I G FARBENINDUSTRIES, 1928, Patent No. 301969