Fehr, H. F., Camp, J., & Kellogg, H. (1971). La revolución en las matemáticas escolares [segunda fase]. OEA.
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Chicago Style (17th ed.) Citation
Fehr, Howard Franklin, John Camp, and Howard Kellogg. La Revolución En Las Matemáticas Escolares [segunda Fase]. Washington: OEA, 1971.
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MLA (9th ed.) Citation
Fehr, Howard Franklin, et al. La Revolución En Las Matemáticas Escolares [segunda Fase]. OEA, 1971.
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Warning: These citations may not always be 100% accurate.