Raab, Carolyn A., Oregon State University. Extension Service, and Pacific Northwest Cooperative Extension. 2010. Canning Tomatoes and Tomato Products. : [Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Extension ; [Moscow, Idaho] : University of Idaho Extension ; [Washington, D.C.] : U.S. Dept. of Agriculture.