00419nam a2200157Ia 4500008004100000020001500041082001800056100002300074245005100097250000600148260004300154300000800197650001400205650002000219653002200239170901s1971    xx            000 0 und d  a0721674879  a372.216bR29N  aRead, Katherine H. 0aNursery SchoolbHuman Relationships Laboratory  a5  aPhiladelphiabW. B. Saunders Co.c1971  a401  aEducation  aSocial sciences  aNursery education