| Feeding and Food Sharing |
1976 |
Natl Geographic Society / Educational Services |
|
16mm |
|
sound |
| Feeding and food sharing |
1976 |
National Geographic Society |
0:23:00 |
16mm |
Color |
sound |
| Infant Development |
1976 |
National Geographic Society |
0:25:00 |
16mm |
Color |
sound |
| Tool Using |
1976 |
Natl Geographic Society |
|
16mm |
|
sound |