- ...Survey
- Based on observations obtained at
the German-Spanish Astronomical Center, Calar Alto, Spain, operated by the
Max-Planck-Institut für Astronomie, Heidelberg, jointly with the Spanish
National Commission for Astronomy.
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- ...Survey
- Figures 4 to 14 are
available with the electronic version of the paper at
http://www.edpsciences.com
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- ...quasars
- Tables 2-4 are also
available in electronic form via anonymous ftp at cdsarc.u-strasbg.fr
(130.79.128.5) or on the web via http://cdsweb.u-strasbg.fr/Abstract.html
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- ...Survey
- The Digitized Sky Survey, 1994, CD-ROM Version, Space
Telescope Science Institute.
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