//-->
Mining's part in the growth of Union
Busschau, W. J., (1960)
[Besprechung von:] Busschau, W. J.: The theory of gold supply with special reference to the problems of the Witwatersrand
Paish, F. W., (1937)
[Besprechung von:] Busschau, W. J.: The measure of gold. Cape Town: Central News Agency 1949
Weyforth, William Oswald, (1950)