TY - JOUR TI - Marital coital frequency and the passage of time: estimating the separate effects of spouses ages and marital duration, birth and marriage cohorts, and period influences T2 - American sociological review VL - 50 IS - 2 EP - 241 AU - Jasso, Guillermina PY - 1985 LA - English SP - 224 SN - 0003-1224 ER -