00661cam a22002291  4500001001300000003000400013005001700017008004100034010001700075035001900092040002500111042001200136050001500148110006100163245006800224260004500292300002000337650001200357650002300369650002200392999001700414med47002713 DLC20260227111607.0760113s1946    ohu           000 0 eng    amed47002713   a(OCoLC)1923606  aDLCcNICdOCoLCdDLC  apremarc00aRJ131b.F42 aSamuel S. Fels Research Institute, Yellow Springs, Ohio.14aThe Fels Research Institute for the study of human development.  aYellow Springs,bAntioch College,c1946.  a  31 p.c23 cm. 0aGrowth. 0aChild development. 0aChild psychology.  c38672d38672