ISBN-13: 9781475984958 / Angielski / Miękka / 2013 / 176 str.
EASY PUZZLES
VOLUME 6 - ADDITION
VOLUME 7 - SUBTRACTION
VOLUME 8 - MULTIPLICATION
VOLUME 9 - DIVISION
VOLUME 10 - SQUARE ROOTS
VOLUME 11 - CELEBRITY EDITION CORRELATIONS "THE RELATIONSHIP BETWEEN TWO THINGS" CREATED BY: WILLIAM S. ROGERS III