MModern mental arithmeticModern mental arithmeticde William Scott · Publicada por primera vez en 1997MateriasArithmeticArithmétiqueEdiciones (1)Modern mental arithmetic (1997)Educational Book Co. · inglésMás obras de William ScottHHandbook to the New Hamblin Smith's arithmeticHandbook to the New Hamblin Smith's arithmetic1997Hints on how to teach the new Canadian geography1995Examination papers suitable for intermediate examination
