1 “... has been freely used throughout this book. In particular, the Phillips Lectures at Haverford College...”

2 “... degrees - notably, those at Drexel University, Haverford College, La Salle University, and Swarthmore...”

3 “... is an elaboration of a series of lectures given by Fox at Haverford College while a Philips Visitor...”

4 “... regularly since the NATO workshop held in June 1983 at Haverford College only two kilometers distant from...”