Schack August Steenberg Krogh ForMemRS (November 15, 1874 - September 13, 1949) je onimo sayensi to gba Ebun Nobel fun Iwosan.ItokasiAwon elebun Nobel ninu Iwosan.. 
Ṣíd was a brilliant political netgbára and had a prominent planning role in the militant umọṣẹ́nto we sizwe ("spear of the Nation").. 