Africa and the origins of man : a memorial lecture in honour of Dr. L.S.B. Leakey, delivered at the University of Ibadan on 7 December 1972 / by Thurstan Shaw. Shaw, Thurstan. MLCS 83/7427 (D) 573.2 BUO Ibadan, Nigeria : Ibadan University Press, 1973. 1973. 1973 Text ix, 21 p., [3] leaves of plates : ill. ; 22 cm. eng