01212agm a2200313u 4500 995750520102311 20260227104100.0 mrrcaaad 840127s1983 dcu023u r 0mleng d (TU)000575052UTK01 604940 (OCoLC)10344574 TKN TKN tknk QE711.2 .F6 1983 QE711.2.F6 1983 Fossils, clues to the past [motion picture] / National Geographic Society. Washington, D.C. : National Geographic Society, Educational Services, c1983. 1 film reel : sd., col. ; 16 mm. Intended audience: Grades 7-12 and adults. Issued also as videorecording. 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. Paleontology. Johanson, Donald C. National Geographic Society (U.S.) National Geographic Society (U.S.). Educational Services. primo 234 234