Dr. George Lenchner · G L. · George L.
| title | ISBN-13 | year of publication |
|---|---|---|
| Creative Problem Solving in School Mathematics | 978-1-882144-10-5 | 2005 |
| Mathematical Olympiad Contest Problems for Children | 978-0-9626662-0-9 | 1990 |
| Math Olympiad Contest Problems for Elementary and Middle Schools | 978-0-9626662-1-6 | 1996 |
| Overhead Projector in the Math Classroom | 978-0-87353-080-4 | 1974 |
Glenwood Pubns Inc · Mathematical Olympiads · National Council of Teachers of Mathematics