TY - JOUR T1 - The Proportion of the Sexes Produced by Whites and Coloured Peoples in Cuba JF - Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character (1905-1934) VL - 81 IS - 545 SP - 32 EP - 37 PY - 1909/03/13/ UR - http://dx.doi.org/10.1098/rspb.1909.0004 M3 - doi:10.1098/rspb.1909.0004 AU - Heape, W. ER -