00748cam a2200265 4500 142435738 TxAuBib 19990727120000.0 990727s1985||||||||||||||||||||||||eng|u 85008308 9780394549088 $27.50 0394549082 $27.50 TxAuBib Sagan, Carl, 1934- Comet / Carl Sagan and Ann Druyan. 1st ed. New York : Random House, 1985. xiv, 398 p. : ill. (some col.) ; 27 cm. Includes indexes. Bibliography: p. 379-384. 19990727. Comets. Halley's comet. Druyan, Ann, 1949-