Kleeulme (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Kleeulme" in German language version.

refsWebsite
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ars-grin.gov

npgsweb.ars-grin.gov

  • Ptelea im Germplasm Resources Information Network (GRIN), USDA, ARS, National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Abgerufen am 11. Juni 2017.

doi.org

  • John D. Ambrose, Peter G. Kevan, Randy M. Gadawski: Hop tree (Ptelea trifoliata) in Canada: population and reproductive biology of a rare species. In: Canadian Journal of Botany. 63(11), 2011, S. 1928–1935, doi:10.1139/b85-272.

tropicos.org

ufl.edu

hort.ifas.ufl.edu

  • Edward F. Gilman, Dennis G. Watson: Ptelea trifoliata, Common Hoptree. USDA Forest Service Fact Sheet ST-530, 1994. (PDF).