TY  - BOOK
AU  - Shipman,Harry L.
TI  - Black holes, quasars, and the universe
U1  - 523 
PY  - 1980///
CY  - Boston
PB  - Houghton Mifflin
KW  - Black holes (Astronomy)
KW  - Quasars
KW  - Cosmology
ER  -