Volume 43, Number 4 December 2009 Issue 170

	TABLE OF CONTENTS
109	Message from the SIGSAM Chair Jeremy Johnson
110	Open Computer Algebra Systems: GAP David Joyner
119	Abstracts of Recent Doctoral Dissertations in Computer Algebra Jeremy Johnson
122	ISSAC Award Citations
123	Announcements for Workshops and Conferences
	Single PDF file of Issue 170