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3
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Giants from the past : the age of mammals / photographs by Joseph H. Bailey.
- 569 G434
- National Geographic Society,
- 1983.
- [Washington, D.C.] :
-
Science : it's changing your world.
- 500 M3791
- Martin, Paul D., 1946-
- National Geographic Society,
- c1985.
- [Washington, D.C.] :
-
Why on earth?
- 500 W6291
- National Geographic Society,
- 1988.
- [Washington, D.C.] :