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000058138 0500_ $$aQA135$$b.S75 1966
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000058138 1001_ $$aSpencer, Peter Lincoln,$$d1893-
000058138 24000 $$aBuilding mathematical concepts in the elementary school
000058138 24510 $$aBuilding mathematical competence in the elementary school$$c[by] Peter Lincoln Spencer [and] Marguerite Brydegaard.
000058138 250__ $$aRev. ed.
000058138 260__ $$aNew York,$$bHolt, Rinehart and Winston$$c[1966]
000058138 300__ $$axii, 403 p.$$billus.$$c24 cm.
000058138 500__ $$aPublished in 1952 under title: Building mathematical concepts in the elementary school.
000058138 504__ $$aIncludes bibliographies.
000058138 650_0 $$aArithmetic$$xStudy and teaching (Elementary)
000058138 7001_ $$aBrydegaard, Marguerite,$$ejoint author.
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