Mason, R. (1971). programmed learning Aid for college mathematies. Learning system company vision of R.D Irwin.
Citace podle Chicago (17th ed.)Mason, R. Programmed Learning Aid for College Mathematies. Homewood: Learning system company vision of R.D Irwin, 1971.
Citace podle MLA (9th ed.)Mason, R. Programmed Learning Aid for College Mathematies. Learning system company vision of R.D Irwin, 1971.
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