1971 - Puzzles in Math and Logic Onehundred New Recreations (Paperback) ISBN-13: 9780486222561 ISBN-10: 048622256X Genres: Science & Math, Humor & Entertainment 2 |
1971 - Puzzles in Math and Logic Onehundred New Recreations (Paperback) ISBN-13: 9780486222561 ISBN-10: 048622256X Genres: Science & Math, Humor & Entertainment 2 |