Title: Vorm III. Sarjast "Stereoskoopilised vormid" / Creator: Keerend, Avo (autor) / Date: 1969 / Providing institution: Eesti Kunstimuuseum / Aggregator: E-Varamu / Providing Country: Estonia / CC0 1.0 / Vorm III. Sarjast "Stereoskoopilised vormid" by Keerend, Avo (autor) - 1969 - Art Museum of Estonia, Estonia - CC0. https://www.europeana.eu/item/401/item_VUHX5DK5KOBYNBVFPXSCURS2AAUQIII2