Cox, Dennis P.
Introductory geology : a programmed text
W. H. Freeman, 1965
Buku Teks
Smith, Genevieve Love
Medical terminology: a programmed text
Delmar Publishers, 1991
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Edwards, James Don
Accounting : a programmed text
R. D. Irwin, 1967
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Davis, Thomas A.
Analytic geometry a programmed text
McGraw-Hill, 1967
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Edwards, James Don
Accounting a programmed text; Volume II
Richard D. Irwin, 1968
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