Home › Authors › S. Gill Williamson 👤 S. Gill Williamson 7 books Books by S. Gill Williamson Foundations of Combinatorics with Applications 2013 Mathematics for algorithm and systems analysis 2005 A short course in discrete mathematics 2004 Combinatorics for computer science 2002 The Observers 1988 Top Down Calculus 1987 Top-Down Calculus 72-7 Top-Down Calculus 72-7 1987