1. Deformation theorems 2. Cohopficity 3. Coverings between knot exteriors 4. Subgroups of finite index 5. Knot subgroups of torus-knot groups 6. Depth, and loose and tight subgroups 7. Knot subgroups of knot groups
Notes
"September 1992, volume 99, number 474 (first of 4 numbers)."