motivacion

First Regional Meeting of Extragalactic Astronomy, 1975. V. Blanco

First Regional Meeting of Extragalactic Astronomy, 1975. P. Kaufman

First Regional Meeting of Extragalactic Astronomy, 1975. H. Quintana, W. Fogarty & P. Kaufman

First Regional Meeting of Extragalactic Astronomy, 1975. J. L. Sérsic, T. G. Castellanos & P. Kaufman

Second Regional Meeting of Extragalactic Astronomy, 1987

Thrid Regional Meeting of Extragalactic Astronomy, 1996