supervised by: Trade and Economic Exchange Division, Hokkaido Prefectural Government, edited by: The Hokkaido International Trade & Industry Promotion AssociationThe Hokkaido International Trade & Industry Promotion Association[1992]<D9-B830>
supervised by: Dept. of Commerce, Industry, Labor and Tourism, Hokkaido Prefectural Government, edited by: The Hokkaido International Trade & Industry Promotion AssociationThe Hokkaido International Trade & Industry Promotion Association[1990]<DE231-B50>