TY  - BOOK
ED  - Time-Life Books.
TI  - The Third planet
SN  - 0809468794
U1  - 525 20
PY  - 1989///
CY  - Alexandria, Va.
PB  - Time-Life Books
KW  - Earth
KW  - Popular works
N1  - Includes index; Bibliography: p. 136-140
ER  -