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- Language: English
- Year: 1992

- Author: A. S. Wightman (auth.) G. Velo A. S. Wightman (eds.)
- Language: English
- Year: 1990

- Author: D. A. Ramsay (auth.) Prof. Antonio C. P. Alves Dr. John M. Brown Dr. J. Michael Hollas (eds.)
- Language: English
- Year: 1988