ISBN 9781470436742 books & textbook
Y Origami?: Explorations in Folding
David C. Morgan Denise M. Halverson Spencer P. Magleby Terri C. Bateman Larry L. Howell
American Mathematical Society /2017-12-06 Paperback / 152 Pages
isbn-10: 1470436744 / isbn-13: 9781470436742
