1. 1) MacFarlane, E. W. E.,: J. Asiat. Soc. Beng., 7, 1-5 (1941) (cit. from A. E. Mourant, and A. C. Kopéc: The ABO Blood Groups. Oxford, Blackwell, 121 (1958).
2. 2) Basu, R. N.,: Blood groups among the Khasis, Nature, 142, 797 (1938).
3. 3) Tanaka, T.,: A study of the Japanese from the standpoint of the blood groups (in Jap.), Hanzaigaku Zasshi, 25 (1), suppl., 37-67 (1959).
4. 4) Nakajima, A.,: Distribution and inheritance of taste ability for phenyl-thio-carbamide (P.T.C.), with special reference to difference in threshold values between homo- and heterozygotes (in Jap.), Hanzaigaku Zasshi, 25 (5), suppl. II, 28-41 (1959).
5. 5) Das, S. R.,: Inheritance of the P.T.C. taste character in man: An analysis of 126 Rárhi Bráhmin families of West Bengal, Ann. Hum. Genet., 22, 200-212 (1958).