Differential geometry

More about Differential Geometry: http://en.wikipedia.org/wiki/Differential_geometry

Differential geometry
by A. V Pogorelov
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Elementary Differential Geometry
by Barrett O'Neill
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Differential Geometry
by Antonio M. Naveira
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password: twilightzone

Notes on Differential Geometry, 1965
by Noel J Hicks
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Differential Geometry and Related Topics
by Gu Chaohao
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