The present volume comprises the proceedings of the VI. International Colloquium on Group Theoretical Methods in Physics held at Tubingen in July 1977 on the occasion of the five hundredth anniversary of the Eberhard-Karls-Universitat. A glance at the table of contents shows the variety of contributions presented. It may be seen that many different branches of physics were dealt with. The methods of group theory which connect these contributions range from recent mathematical research to specific applications. The attempt at communication over a wide range of physical and mathematical concepts has been one of the characteristic features of this series of colloquia.