00506nam a2200181Ia 450000500170000000800410001704000190005804100120007708200160008924500520010526000380015730000280019550400250022365000140024865100270026270000250028985000100031420240205100750.0131103s9999    xx            000 0 und d  aLoreto College  aEnglish  a370.15bHOU  aMental Hygiene,   cEdited by Peter T. Hountras  aColumbusbClarles E.Merrillc1961  axi,577 p.b ill.,tables  aSecond printing 1966  aEducation  aEducational Psychology  aHountras,Peter T.ed.  aLCLIB