found: Work cat.: Gerhard, C.C. Physical and mechanical properties of blackbutt eucalyptus grown in Hawaii. U.S. Forest Service Research Paper FPL 65, August 1966.
found: Hill, K. Eucalyptus pilularis sm., (16 June 2010), in PlantNET - The Plant Information Network System of Botanic Gardens Trust, Sydney, Australia (version 2.0), viewed Aug. 19, 2010.
found: USDA Natural Resources Conservation Service, viewed Aug. 19, 2010(symbol=EUPI Entry: Eucalyptus pilularis Sm. blackbutt. Documentation: Wagner, W.L., D.R. Herbst, and S.H. Sohmer. 1990. Manual of the flowering plants of Hawai'i, 2 vols. University of Hawaii Press, Bishop Museum, Honolulu)
found: Wikipedia(Eucalyptus pilularis, viewed Aug. 19, 2010.)
found: GRIN, viewed Sept.1, 2010(Eucalyptus pilularis; common names: blackbutt, woolly gum)