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650. Woolsoy. T. T. Western yellow pine in Arizona and New 

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651. Wörnle. P. Die zweckmä.ssige Grösse der Forst bezirke 

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652. Barrett, M. F. A leaf key to the genera of the common 

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653. Blakeslee, A. F. and Jarvis, C. D. Xew England trees in 

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654. Elliott, S. B. Tlie important timber trees of the United 

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655. Hickel, R. Graines et Plantulen des Arbres et Arbustes 

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656. Johns, C. A. The forest trees of Britain. London and 

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657. Julius, C. A. British trees, including tlie finer shrubs 

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658. Lambeth, W. A. Trees and how to known them. Atlanta, 

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659. Parde, L. Eine einfache dichotomische Bestimmungs- 

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660. Reeord, S. J. Economic woods. New York 1912, VII u. 117 pp. 

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661. Rehder, A. The Bradley bibliography I. Dendrology 

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662. Catalogo Forestal de la Republica Mexicana. Mexico 

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663. Burns, F. The Crater National Forest: Its resources 

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604. Jacquot, A. La For et, son Röle dans la nature et les 

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665. Peavy, G. W. The forests of Oregon: Their importance 

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666. AViiidisch-Graetz, H. V. Die ursiirüngliche natürliche Ver- 

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