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A clean, unmarked book with a tight binding. 192 pages. "Here is the first compendium of all the known species, subspecies, and most of the 'forms,' of Swallowtail butterflies found in all of North America, from Yucatan to Alaska. Color plates portray 203 Swallowtails, and line drawings show how to tell Swallowtails from other kinds of butterflies. The text covers the scientific name, commone name, wing expanse, description, habitat, flight time, food plants, early stages, and distribution."