United States Department of Agriculture, National Agricultural Statistics Service, Agricultural Statistics Board1991.<Y622-B579>
国立国会図書館
United States Department of Agriculture, National Agricultural Statistics Service, Agricultural Statistics Board1990.<Y622-B578>
国立国会図書館
U.S. Dept. of Agriculture, Crop Reporting Board, Statistical Reporting Service1977.<DT591-51>
国立国会図書館