The capacity for physical work of the white miners in South Africa II. the rates of oxygen consumption during a step test Authors: Wyndham CH, Sluis-Cremer GK. Source: S Afr Med J. 1968; 42:841-844. Babalwa Jekwa2019-04-11T00:00:08+02:00Dec 31st, 1968| Share This Page, Choose Your Platform! FacebookTwitterLinkedInWhatsappEmail