Abbott, Janet S.
Mathematics today: Teachers resource book/ Janet S. Abbot, David W. Wells
Harcourt Brace Javanovich, 1987
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Burton, David M.
The history of mathematics : an introduction / David M. Burton
McGraw-HIl, 1996
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May, W. Graham
Foundations in modern mathematics / W. Graham May
Balisdell , 1967
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Armstrong, James W.
Elements of mathematics
Macmillan, 1976
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Campbell, Hugh G.
Finite mathematics
Macmillan, 1974
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