TY  - BOOK
AU  - Harrison,Edward Robert
TI  - Darkness at night: a riddle of the universe 
SN  - 0674192710
PY  - 1987///
CY  - Cambridge, Mass.
PB  - Harvard University Press
KW  - Astronomy
KW  - History
KW  - Cosmology
KW  - Astrophysics
ER  -