1. The genetical theory of natural selection.
2. Selection against heterozygosis in man;Haldane;Ann. Eugen., Lond,1942
3. Parental and fraternal correlations for fitness;Haldane;Ann. Eugen., Lond,1949
4. The supposed threat of declining intelligence;Penrose;Amer. J. Ment. Def,1948