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By: Orchid Exchange (Philadelphia, Pa.) - Emile Praet (Firm) - Henry G. Gilbert Nursery and Seed Trade Catalog Collection.Edition:Publication info: Roxborough, Philadelphia, Pa, Orchid Exchange, 1946Volume: 1946Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: Seed & Nursery Catalogs