灰北極熊 (Chinese Wikipedia)
Analysis of information sources in references of the Wikipedia article "灰北極熊" in Chinese language version.
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archive.org
- Barnosky, Anthony D. Island Press , 编. Heatstroke: Nature in an Age of Global Warming
. Island Press. 2009: 10. ISBN 978-1-59726-197-5. Pizzly Bear.
doi.org
- Mallet, James. Hybridization, ecological races and the nature of species: empirical evidence for the ease of speciation (PDF). Phil. Trans. R. Soc. B. 2008, 363 (1506): 2971–2986 [2021-12-19]. PMC 2607318
. PMID 18579473. doi:10.1098/rstb.2008.0081. （原始内容存档 (PDF)于2021-04-22）.
msn.com
msnbc.msn.com
- Wild find: Half grizzly, half polar bear: Hunter bags what expert 'never thought would happen' in wild. AP News. 2006-05-11 [2006-05-14]. （原始内容存档于2006-08-18）.
nih.gov
ncbi.nlm.nih.gov
- Mallet, James. Hybridization, ecological races and the nature of species: empirical evidence for the ease of speciation (PDF). Phil. Trans. R. Soc. B. 2008, 363 (1506): 2971–2986 [2021-12-19]. PMC 2607318 . PMID 18579473. doi:10.1098/rstb.2008.0081. （原始内容存档 (PDF)于2021-04-22）.
ucl.ac.uk
- Mallet, James. Hybridization, ecological races and the nature of species: empirical evidence for the ease of speciation (PDF). Phil. Trans. R. Soc. B. 2008, 363 (1506): 2971–2986 [2021-12-19]. PMC 2607318 . PMID 18579473. doi:10.1098/rstb.2008.0081. （原始内容存档 (PDF)于2021-04-22）.
web.archive.org
- Mallet, James. Hybridization, ecological races and the nature of species: empirical evidence for the ease of speciation (PDF). Phil. Trans. R. Soc. B. 2008, 363 (1506): 2971–2986 [2021-12-19]. PMC 2607318 . PMID 18579473. doi:10.1098/rstb.2008.0081. （原始内容存档 (PDF)于2021-04-22）.
- Wild find: Half grizzly, half polar bear: Hunter bags what expert 'never thought would happen' in wild. AP News. 2006-05-11 [2006-05-14]. （原始内容存档于2006-08-18）.
- Iol.co.za （页面存档备份，存于互联网档案馆） URL last accessed 11 May 2006.