00913nam--2200337---450-99000163576020331620050930095805.0000163576USA01000163576(ALEPH)000163576USA0100016357620040505d1953----km-y0itay0103----baengGB||||||||001yy<<An>> experiment in educationV. L. GriffithsLondonLongmans1953XV, 160 p.22 cm.20012001001-------2001GRIFFITHS,V. L.561386ITsalbcISBD990001635760203316II.4. 2190(VI C 606)1077 L.M.VI CBKUMASIAV81020040505USA011219COPAT69020050930USA010958Experiment in education943686UNISA