USSR stamp: 13th International Entomological Congress (1968, Moscow). Ground Beetle (Carabus schoenherri) and Emblem. Series: International Scientific Congresses to Be Held in USSR
30 May 1968
USSR stamp: 13th International Entomological Congress (1968, Moscow). Ground Beetle (Carabus schoenherri) and Emblem. Series: International Scientific Congresses to Be Held in USSR
30 May 1968