High redshift QSOs and the X-ray background
By: principal investigator: Chris Impey.
Contributors: United States. National Aeronautics and Space Administration.
Series: [NASA contractor report] -- NASA CR-195112.; NASA contractor report -- NASA CR-195112.
Publisher: National Aeronautics and Space Administration; National Technical Information Service, distributor
Published: 1994
Place of publication: [Washington, DC; Springfield, Va
Language: eng
Format: Microform
Subjects: Astronomy.
Notes: Distributed to depository libraries in microfiche.

Shipping list no.: 94-0577-M.

Microfiche. [Washington, D.C. : National Aeronautics and Space Administration, 1994] 1 microfiche.