Longitudinal study performing 1959 of five–14 season olds during the San francisco bay area, California
Longitudinal study performing 1959 of five–14 season olds during the San francisco bay area, California Middle-classification. About 300 for every decades/gender classification. Together with mix-sectional learn from 1967–70 away from center-classification 5–fourteen seasons olds for the Bay area, California. Crispin, S. Kerrey, E., Fox, H.M. & Kies, C. (1968).