Feeding and Food Sharing; Tool Using; Infant Development. Three Educational Films Produced as a Series Entitled Jane Goodall: Studies of the Chimpanzee by the National Geographic Socitey, 17th & M Streets, N.W., Washington, D.C. 20036. Sales @ $310.00. Teachers Guides Can be Purchased From the National Geographic Society. Available for Rental From Audio Visual Services, Pennsylvanina State University, University Park, Pennsylvanina 16802. 16mm, Color, Sound, 23 Minutes per Film. Rental Fee @ $14.50.