Dr. Carl Seltzer

title	ISBN-13 (ISBN-10)	year of publication
Addition Facts in Seven Days / Grades 2-4	978-1-58324-274-2 (1-58324-274-0)	2007
Multiplication Facts in Seven Days: A Simple Method for Success, Grades 3-5	978-1-58324-275-9 (1-58324-275-9)	2007