TY - BOOK AU - Rindfuss, Ronald R., AU - Morgan, S. Philip. AU - Swicegood, Gray, TI - First births in America: changes in the timing of parenthood T2 - Studies in demography SN - 0520059077 (alk. paper) U1 - 306.8 PY - 1988/// CY - Berkeley PB - University of California Press KW - Family demography KW - United States KW - Parenthood KW - Fertility, Human N1 - Includes indexes; Includes bibliographical references ( p. [251]-275 ) ER -