Hamilton, G.N.G.
Geology for South African students : an introductory text-book / G. N. G. Hamilton. - 4th ed. - South Africa : Central News Agency, 1960. - ix, 441 p. : ill., maps( 2 fol., 1 col.), plates ; 22 cm.
Geology.
South Africa.
Geology for South African students : an introductory text-book / G. N. G. Hamilton. - 4th ed. - South Africa : Central News Agency, 1960. - ix, 441 p. : ill., maps( 2 fol., 1 col.), plates ; 22 cm.
Geology.
South Africa.