Terrell, Edward E. A checklist of names for 3,000 vascular plants of economic importance - Washington : Department of Agriculture, 1977 - 201 p. - Agriculture handbook ; 505 . - Agriculture handbook ; 505 . LCCN: 45411 Subjects--Topical Terms: Botánica económica.Plantas--Nomenclatura.Tracheophyta. Dewey Class. No.: 580.14 / T4