First Births in America. Changes in the Timing of Parenthood. Ronald B. Rindfuss, S. Philip Morgan, and Gray Swicegood. University of California Press, Berkeley, 1988. xii, 291 pp., illus. $35. Studies in Demography.

First Births in America. Changes in the Timing of Parenthood. Ronald B. Rindfuss, S. Philip Morgan, and Gray Swicegood. University of California Press, Berkeley, 1988. xii, 291 pp., illus. $35. Studies in Demography.