Fossils : clues to the past / [Videorecording] /
National Geographic Society.
- Washington, D.C. : Natinal Geographic Society, c1983.
- 1 videocassette (23 min.) s.d. ; 1/2 in. + teacher's guides.
A Natinal Geographic society Educational Film presentation in association with Thomas Craven Film Corporation. #51077--Cassette label.
Johanson, Donald C.
Dr. Donald C. Johanson discusses what a fossil is and some of the ways in which they are formed. He also discusses what fossils reveal and how scientists determine their age.
83706455
Paleontology.
Fossils.
A Natinal Geographic society Educational Film presentation in association with Thomas Craven Film Corporation. #51077--Cassette label.
Johanson, Donald C.
Dr. Donald C. Johanson discusses what a fossil is and some of the ways in which they are formed. He also discusses what fossils reveal and how scientists determine their age.
83706455
Paleontology.
Fossils.