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Aerograma [Andrea Wataghin] a Klaus [Stefan] Tausk

Carta de [Ismael Escobar] a Klaus [Stefan] Tausk

Carta de Ismael Escobar a Klaus [Stefan] Tausk

Carta de Hans Albert Meyer (Jean) a Klaus [Stefan] Tausk e Giorgio Moscati

Carta de [Andrea Wataghin] a Klaus [Stefan] Tausk

Carta de Ismael Escobar a Klaus [Stefan] Tausk

Carta de European Organization for Nuclear Research Genéve a Andrea Wataghin

Carta Andrea [Wataghin] a Klaus [Stefan] Tausk

Carta de B. Kockel a David Bohm