TY  - BOOK
ED  - Time-Life Books 
TI  - Frontiers of time
SN  - 0809469294
AV  - QB 981 F935 1991
U1  - 523.1 
PY  - 1991///
CY  - Alexandria, Va.
PB  - Time-Life Books
KW  - Cosmology
KW  - Cosmología
N1  - Includes bibliographical references (p. 137-140) and index
ER  -