00925cam a22002411 4500 ss 50000030 DLC 20260227112751.0 820127s1950 dcu 000 0 eng ss 50000030 (OCoLC)8098992 DLC OrU OrU DLC premarc Z5814.C5 D4 Del Solar, Charlotte Fehlman, 1918- Readings on the psychological development of infants and children [by] Charlotte Del Solar ... [and] Milton J. E. Senn ... Child Study Center, Yale University, New Haven, Conn., in collaboration with the Federal Security Agency, Social Security Administration, Children's Bureau. [Washington] 1950. vi, 46 p. 27 cm. Child psychology. Child psychology Bibliography. Senn, Milton J. E., 1902- Yale University. Child Study Center. 90927 90927