Editions Galerie "Zem Specht"
Text, Heiny Widmer
Editions Galerie "Zem Specht" c1982 Editions Galerie "Zem Specht" Bd. 5
所蔵館1館
Text, Dorothea Christ
Editions Galerie "zem Specht" c1978 Editions Galerie "Zem Specht" Bd. 1