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Geometry

There are various English-language editions of Euclid available at archive.org. Search here.

Euclidean

Introductory

Beyond introductory

Euclidean and non-euclidean

Focusing on projective geometry

Computational Geometry

General Topology

Algebraic Topology

Differential Geometry

Applied and Computational Topology

Algebraic geometry

Introductions

Classical (pre-Grothendieck)

Beyond