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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Mansfield, Maynard J.
Introduction to topology
Robert E. Krieger, 1972
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"Topology vol. II: colloquia mathematica societatis janos bolyai, 23"
"Amsterdam: North-Holland Publishing Company, 1980",
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Topology, vol.1 and vol. II / Edited by A. Csaszar
North-Holland, 1980
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