1. Introduction.- 2. Viktor VladimirovichWagner (1908-1981).- 3. Wagners work in historical context.- 4. Notes on the translations.- 5. A ternary algebraic operation in the theory of coordinate structures.- 6. On the theory of partial transformations.- 7. Generalised groups.- 8. Theory of generalised heaps and generalised groups.- 9. Generalised heaps as affine structures. - Wagners publications. -Index.