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Non-Routine Word Problems: One Part of a Problem-Solving Program in the Elementary School. Unuebliche Textaufgaben - Teil eines Sachrechenprogramms in der Grundschule. (English)
Sch. Sci. Math. (Jan 1992) v. 92(1) p. 31-37. CODEN: SSMAAC [ISSN 0036-6803]
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