Crowell R.H., Fox R.?. Introduction to knot theory

Springer- Verlag, 1963. 182 p.
Contents
Prerequisites
Chapter I Knots and Knot Types
Chapter II The Fundamental Group
Chapter III The Free Groups
Chapter IV Presentation of Groups
Chapter V Calculation of Fundamental Groups
Chapter VI Presentation of a Knot Group
Chapter VII The Free Calculus and the Elementary Ideals
Chapter VIII The Knot Polynomials
Chapter IX Characteristic Properties of the Knot Polynomials
Appendix I Differentiable Knots are Tame
Appendix II Categories and groupoids
Appendix III Proof of the van Kampen theorem
Guide to the Literature
Bibliography
Index