TY - JOUR A1 - Kumm, J. A1 - Laland, K. N. A1 - Feldman, M. W. T1 - Gene-Culture Co-evolution and Sex-Ratios: The Effects of Infanticide, Sex-Selective Abortion, Sex Selection, and Sex-Biased Parental Investment on the Evolution of Sex Ratios Y1 - 1994 JF - Theoretical Population Biology VL - 46 IS - 3 SP - 249 EP - -278 ER -