Polynomials (Problem Books in Mathematics), E.J. Barbeau

Introductory Graph Theory (Dover Books on Mathematics) - Paperback - VERY GOOD

Calculus of Variations (Dover Books on Mathematics) - Paperback - GOOD

Introduction to Linear Algebra and Differential Equations (Dover Books on Ma...

An Introduction to Difference Equations (Undergraduate Texts in Mathematics)

Euclidean and Non-Euclidean Geometries: Development and History

Hilbert Modular Surfaces (ERGEBNISSE DER MATHEMATIK UND IHRER GRENZGEBIETE 3 FOL

Nonlinear Systems (Cambridge Texts in Applied Mathematics, Series Number 10)