Aralia spinosa (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Aralia spinosa" in Italian language version.

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archive.org

Harriet L. Keeler, Our Native Trees and How to Identify Them, New York, Charles Scriber's Sons, 1900, pp. 165–168.

Kristina Connor, Aralia spinosa (PDF), su Wildland Shrubs of the United States and its Territories: Thamnic Descriptions, General Technical Report IITF-WB-1, Edited by John K. Francis, International Institute of Tropical Forestry. URL consultato il 15 giugno 2012.