...IV.

Based on observations collected at the Observatoire de Haute-Provence.

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...IV.

Tables 2 and 3 are presented in electronic form only; Tables 1 through 3 are available from the CDS, Strasbourg, via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html

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