A wheel-chart (pie-chart), the seven sectors of which show seven different types of food which need to be combined in a balanced diet. Colour lithograph, 1943.
- United States. Department of Agriculture.
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The sectors of the wheel are: Group one: green and yellow vegetables; Group two: oranges, tomatoes and grapefruit; Group three: potatoes and other vegetables and fruits; Group four: milk and milk products; Group five: meat, poultry, fish or eggs; Group six: bread, flour and cereals; Group seven: butter and fortified margarine