00993cam--2200337---450 99000131047020331620200702061844.0000131047USA01000131047(ALEPH)000131047USA0100013104720031219d1969----km-y0itay0103----baengGB||||||||001yy<<The>> child's conception of numberJean PiagetLondonRoutledge and Kegal Paul1969IX, 248 p.22 cmBambiniConcezione [dei] NumeriBNCF155.4PIAGET,Jean<1896-1980 >0ITsalbcISBD990001310470203316II.4. 1911(VI C 2078)43451 L.M.VI CBKUMASIAV51020031219USA011155PATRY9020040406USA011733COPAT19020050927USA011606Child's conception of number929006UNISA