• 6 Journals, Magazines, Newspapers

• 2 Control
• 2 Milk trade
• 2 Weeds
• 1 Bee culture
• 1 Dairying
• 1 Immigrants
• 1 Milk yield
• 1 Recreation
• 1 Recreation and state

• 2 North Central Weed Science Society (U.S.)
• 1 Dairy Farmers of Ontario
• 1 Ontario Beekeepers' Association
• 1 Ontario. Community Programmes Branch
• 1 Ontario. Milk Marketing Board

• 2 Middle West
• 2 Prairie Provinces

Limit year range