Umweltschutz

rettet den wald – sauvez la forêt – salvate il bosco – salvai il god – save our woods Hans Erni,1983

rettet die Luft – Sauvez l‘air – salvate l‘aria – salvai l‘aier – save our air Hans Erni,1985

SOLD Rettet das Wasser – sauvez les eaux – salvate le acque – salvai las ovas- save our water Hans Erni,1985