Variable Stars in Globular Clusters and in Related Systems: Proceedings of the IAU Colloquium No. 21 Held at the University of Toronto, Toronto, Canada August 29-31, 1972

This volume contains the papers and discussions at IAU Colloquium No. 21 on Variable Stars in Globular Clusters and in Related Systems held in Toronto on the 29th, 30th and 31st August 1972. It was the intention of the organizers that this meeting should honour the life long work in this field of Professor Helen Sawyer Hogg. She has been continuously active in observational research on variables in globular clusters for 46 years and her catalogues and bibliographies as well as her research ...