The constitutions of Colombia

Durham, N.C. Duke Univ. Press 1948 .
xii, 478 p. , The texts of the constitutions are translations from Constitutiones de Colombia, comp. by Pombo and Guerra (Bogotá, 1911) and from those pub. by the Colombian Ministry of Government 1936 and 1945.

Meaningful vs. mechanical learning a study in grade III subtraction by William A. Brownell and Harold E. Moser

By Brownell, William Arthur.
Durham, N.C. Duke Univ. Press 1949 .
xvi, 207 p. 24 cm..

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The constitutions of Colombia

Meaningful vs. mechanical learning a study in grade III subtraction by William A. Brownell and Harold E. Moser