00398nam a22001457a 450000500170000000800410001702000080005804100080006608200170007410000230009124500600011426000510017430000100022570000170023520260425120005.0260425b        |||||||| |||| 00| 0 eng d  a000  aeng  a155.4bSEP/P  aSpencer, Thomas D.  aPerspective in Child Psychologyc/ by Thomas D. Spencer  aNew York:bMcgraw - Hill Book  Company;c1970.  a470p.  aKass, Norman