Semilla, L. V. (1971). Moves and strategies in a principle venture in secondary school mathematics. University Microfilms.
Citace podle Chicago (17th ed.)Semilla, Lilia V. Moves and Strategies in a Principle Venture in Secondary School Mathematics. Ann Arbor: University Microfilms, 1971.
Citace podle MLA (9th ed.)Semilla, Lilia V. Moves and Strategies in a Principle Venture in Secondary School Mathematics. University Microfilms, 1971.
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