National Geographic Book Service : National Geographic picture atlas of our fifty States / prepared by National Geographic Book Service ; Margaret Sedeen, editor ; contributions by Bettie Donley, Diane S. Marton, Maureen Palmedo.
1978
1
National Geographic Firm : Weird but true! 300 dino-mite facts to sink your teeth into. Dinosaurs :
National Geographic Television : Polar prowl [videodisc] / A production of National Geographic Television ; National Geographic Society ; Julian P. Hobbs, McPaul Smith, producers ; Cynthia Van Cleef, writer.
