| Multiplication With Expanded Notation |
|
Science Research Associates Inc. |
|
16mm |
|
sound |
| Multiplication With Expanded Notation, Pt 1 |
|
Science Research Associates Inc. |
|
16mm |
|
sound |
| Multiplication With Expanded Notation, Pt 2 |
|
Science Research Associates Inc. |
|
16mm |
|
sound |