CCounting with an AbacusCounting with an Abacusde Patricia MurphyMateriasAbacusMathematicsMathematics, juvenile literatureReadingEdiciones (1)Counting with an Abacus (2004)Rosen Publishing Group · ISBN 9780823988808Más obras de Patricia MurphyGlow of candlelight1961Reconsidering science learningAt The Art Museum