Numbers and Shapes Revisited: More Problems for Young Mathematicians Autor Judita Cofman 29 mar 1995 Paperback Preț: 194.27 lei 6-8 săpt.
What To Solve?: Problems and Suggestions for Young Mathematicians Autor Judita Cofman 9 mai 1990 Paperback Preț: 316.48 lei 6-8 săpt.