Donaldo Enrique Block
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- 1 Donaldo Enrique Block [1]
- Ruth Augusta Regina Haentsch
- 2 Professor Donaldo Ernesto Block [1.1] b. 16 May 1945 d. 19 May 1997
- Professor Maria Cristina Limbert b. 26 Aug 1946 d. 19 May 1997
- 3 Alan Norman Block [1.1.1] b. 14 May
- 3 Roger Edgar Block [1.1.2] b. 18 Oct
- 3 Glyn Milton Block [1.1.3] b. 17 Jun
- 3 Alan Norman Block [1.1.1]
- 2 Professor Donaldo Ernesto Block [1.1]