TY - JOUR A1 - Goodman, L.A. A1 - Keyfitz, N. A1 - Pullum, T.W. T1 - Family formation and the frequency of various kinship relationships Y1 - 1974 DO - 10.1016/0040-5809(74)90049-5 UR - https://doi.org/10.1016/0040-5809(74)90049-5. VL - 5 IS - 1 ER -