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By: Heard's Landscape Nurseries. - Heard, C. H. - Heard, W. R. - Heard, E. M. - Henry G. Gilbert Nursery and Seed Trade Catalog Collection.Edition:Publication info: Des Moines, Iowa, Heard's Landscape Nurseries, [1960?]Volume: 1960Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: Seed & Nursery Catalogs