Federal-State Market News Service, United States, Agricultural Marketing Service, Fruit and Vegetable Division, Market News Branch, Consumer and Marketing Service, Michigan, Dept. of Agriculture, Bureau of Marketing and Enforcement, Bureau of Foods and Standards, Division of Foods and Standards, Food Inspection Division, and Marketing Division
United States, Department of Agriculture, Production and Marketing Administration, Market News Service on Fruits and Vegetables, Agricultural Marketing Service, Fruit and Vegetable Division, Market News Branch, Consumer and Marketing Service, Washington (State), Dept. of Agriculture, Idaho, and Federal-State Market News Service
Roberts, John W. (John William) and Pierce, Leslie.
Farmers' bulletin (United States. Dept. of Agriculture) ; no. 1479
Apple blotch; Apples; Diseases and pests; life cycle (organisms); apples; orchards; fruit trees; plant diseases and disorders; fungal diseases of plants; leaf blotch; spraying; varietal resistance; sulfur; copper sulfate