web | http://www.nbcnews.com/id/31390058/ns/technology_and_science-science/t/same-sex-behavior-nearly-universal-animals/#.W6vQdvZRdZU |
publication | LiveScience |
date | 2009-06-16 |
web | Bailey NW, Zuk M | Trends Ecol Evol | 2009-06-17 |
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