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000021876 0500_ $$aH62$$b.M2842
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000021876 1001_ $$aMartorella, Peter H.
000021876 24510 $$aConcept learning in the social studies;$$bmodels for structuring curriculum$$c[by] Peter H. Martorella.
000021876 260__ $$aScranton,$$bIntext Educational Publishers$$c[1971]
000021876 300__ $$ax, 157 p.$$billus.$$c23 cm.
000021876 504__ $$aIncludes bibliographies.
000021876 650_0 $$aSocial sciences$$xStudy and teaching.
000021876 85200 $$bgen$$hH62$$i.M2842
000021876 909CO $$ooai:library.usi.edu:21876$$pGLOBAL_SET
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