Volume 59, Number 6 Vol. 59, 2004/6 - pagesPages 721 to 764Peasant Marriage in Nineteenth-Century RussiaBy Alexandre Avdeev, Alain Blum, Irina Troitskaia, translated by Heather JubyPages 765 to 794The Frequency of Twin Births in FranceBy Gilles Pison, Nadège Couvert, translated by Melanie R. WassermanPages 795 to 830Exploring explanatory modelsBy Xavier Bry, Philippe Antoine, translated by Godfrey RogersPages 831 to 863Regional Patterns of Sex Bias and Excess Female Child Mortality in IndiaBy Perianayagam ArokiasamyPages 865 to 878Missing Girls in South Korea: Trends, Levels and Regional VariationsBy Doo-Sub KimPages 879 to 879Book Reviews