Keiser, Norman F.
Introductory economics
John Wiley & Sons, 1960
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Stanlake, G.F.
Introductory economics
Longman, 1987
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Economics of development/ Malcolm Gillis ..et.all
W.W Norton and Company, 1992
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Lipsey, Richard G.
Economics
HarperCollinsCollege Publishers, 1996
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Colander, David C.
Economics / David C. Colander
McGraw-Hill, 2004
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