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000056328 0500_ $$aQA135.5$$b.R3
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000056328 1001_ $$aRappaport, David.
000056328 24510 $$aUnderstanding and teaching elementary school mathematics.
000056328 260__ $$aNew York,$$bWiley$$cc1966.
000056328 300__ $$aix, 227 p.$$billus.$$c24 cm.
000056328 504__ $$aIncludes bibliographical references and index.
000056328 650_0 $$aArithmetic$$xStudy and teaching (Elementary)
000056328 650_0 $$aMathematics$$xStudy and teaching (Elementary)
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