Bingham, Robert C.
Economics concepts : a Programmed approach
McGraw-Hill, 1987
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Bingham, Robert C.
Economic concepts : a programmed approach
McGraw-Hill, 1969
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Bingham, Robert C.
Economics concepts : a Programmed approach
McGraw-Hill, 1972
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Evans, David R.
Essential interviewing: a programmed approach to effective communication
Thomson, 2004
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Simpson, Peter
Basic concepts in organic chemistry : a programmed learning approach
Chapman and Hall, 1994
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