Hoernlé memorial lecture
South African Institute of Race Relations
by H. J. Van Eck
S.A. Institute of Race Relations 1953 2nd & rev. ed. Hoernlé memorial lecture 1951
所蔵館1館
by W.M. Macmillan
S.A. Institute of Race Relations 1949 Hoernlé memorial lecture
所蔵館2館