00691nam0-2200241 --450 991020985990332120170705105921.020170705d1957----kmuy0itay5050 baengUS 001yyWork place for learningby Lawrence PerkinsNew YorkReinhold Publishing Corporation195762 p.ill.30 cmEdifici scolasticiStati Uniti d'AmericaPerkins,Lawrence37099ITUNINAREICATUNIMARCBK9910209859903321RGT 2901309DARPUDARPUWork place for learning1469899UNINA