Scientific investigations with the data base head-1 scanning modulator collimator
Subtitle: final report, 1 Oct. 1984-30 Sep. 1991.
Contributors: Smithsonian Astrophysical Observatory.; United States. National Aeronautics and Space Administration.
Series: [NASA contractor report] -- NASA CR-190477.
Publisher: Smithsonian Astrophysical Observatory; National Aeronautics and Space Administration
Published: 1992
Place of publication: [Cambridge, Mass; Washington, D.C
Language: eng
Format: Microform
Subjects: Astronomy.; Collimators.; Data bases.; HEAO 1.; Modulation.; Modulators.; Proportional counters.; Scanners.; X ray sources.
Notes: Shipping list no.: 92-2545-M.

Microfiche. [Washington, D.C. : National Aeronautics and Space Administration, 1992] 1 microfiche. Title frame illegible; title from label on cover.