Media type: Book Title: North American trees : exclusive of Mexico and tropical United States; a handbook designed for field use; with plates and distribution maps Contributor: Preston, Richard J. [Author] imprint: Ames (Iowa): Iowa State Univ. Press, 1950 Issue: 2. print. Extent: 371 S.; Ill Language: English RVK notation: WL 9825 : Gehölzfloren und Bestimmungsbücher Origination: Footnote: