All About Earth's HistoryDVD - 2005
In its 4.5 billion-year history, the earth has undergone a great number of changes. Trace the evolution of the earth, peek deep inside at the varied layers, and examine how climate affects regions over time.
Publisher: Wynnewood, PA : Schlessinger Media, c2005
Characteristics: 1 videodisc (23 min.) : sd., col. ; 4 3/4 in. + 1 teacher's guide (5 p. ; 19 cm.)