Quasi-simultaneous observations of the BL Lac Object MK 501 in x-ray, UV, visible, IR and radio frequencies
By: Y. Kondo ... [et al.].
Series: NASA technical memorandum -- 81985
Publisher: National Aeronautics and Space Administration, Goddard Space Flight Center
Published: 1980
Place of publication: Greenbelt, Md
Language: eng
Number of pages: 22
Subjects: BL Lacertae objects; Observations; Galaxies; Spectra; X-ray astronomy
Notes: Title from cover.

"July 1980."

Includes bibliographical references (p. 21-22).