by mail: 

		C. D. Godsil
		Combinatorics & Optimisation
		University of Waterloo
		Waterloo, Ontario
		Canada, N2L 3G1
electr(on)ically: 
		email: 	cgodsil at uwaterloo dot ca
		tel:  	(519) 888 4567 X35593
		fax:  	(519) 725 5441
physically: 
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