Semilla, L. V. Moves and strategies in a principle venture in secondary school mathematics.
Chicago-viite (17. p.)Semilla, Lilia V. Moves and Strategies in a Principle Venture in Secondary School Mathematics. Illinois: University of Illinois, 1971.
MLA-viite (9. p.)Semilla, Lilia V. Moves and Strategies in a Principle Venture in Secondary School Mathematics.
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