Gupta, B. (1997). Topology: With complete metric analysis. Kedar Nath ram Nath.
Tohutoru Kātū Chicago (17th ed.)Gupta, B.D. Topology: With Complete Metric Analysis. Meerut: Kedar Nath ram Nath, 1997.
Tohutoro MLA (9th ed.)Gupta, B.D. Topology: With Complete Metric Analysis. Kedar Nath ram Nath, 1997.
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