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1997PhDT........13D Author Comment Author comment for 1997PhDT........13D:

The full text of this thesis is also available from the author's home institution at the URL http://www.ub.rug.nl/eldoc/dis/science/w.j.g.de.blok/

Author comment submitted 26-Sep-2000 by Erwin de Blok. (edeblok@atnf.csiro.au)