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The BL lac phenomenon x-ray observations of transition objects ; Determination of the x-ray spectrum

[Greenbelt, Md. : National Aeronautics and Space Administration, Goddard Space Flight Center ; Springfield, Va. : For sale by the National Technical Information Service, 1994] 1994

Continuum radiation from active galactic nuclei a statistical study

[Washington, D.C. : National Aeronautics and Space Administration, 1986] 1986

Luminosity calibration of low redshift quasars

Wampler, E. Joseph, author.
Santa Cruz, California : University of California ; [Washington, D.C.], National Aeronautics and Space Administration, [1983] 1983

Spectrophotometry of two complete samples of flat radio spectrum quasars

Wampler, E. Joseph, author.
[Santa Cruz, Calif.] : Lick Observatory ; [Washington, D.C.] : [National Aeronautics and Space Administration], [1983] 1983

Two component model for x-ray emission of radio selected QSO's

[Washington, D.C. : National Aeronautics and Space Administration, 1986] 1986

Ultraviolet spectropolarimetry of high redshift quasars with the Hubble Space Telescope

[Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1993] 1993