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    The relations of knowledge of the principles basic to the solution of a problem intelligence, and intrest, in the subject matter to the ability to solve problems [microform] מאת Echevarria, maximo O. 1926-

    יצא לאור 1974
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    The relations of knowledge of the principles basic to the solution of a problem intelligence, and intrest, in the subject matter to the ability to solve problems [microform]

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