Greenberg, Marvin J.
Algebraic topology : a first cource
Addison-Wesley , 1981
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Topology / edited by Á. Császár
New York : North-Holland Pub. Co, 1980
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Armstrong, M.A.
Basic topology: with 132 illustrations/Mark Anthony Armstrong
Springer-Verlag , 1983
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Croom, Fred H.
Principles of topology/Fred H. Croom
Sounders College , 1989
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James, I.M.
General topology and homotopy theory
Springer-Verlag , 1984
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