| Citation | Watrous, J.E. and Q.D. Wheeler, 1981. The out-group comparison method of character analysis. Syst. Zool. 30:1-11. |
| DOI | http://dx.doi.org/ |
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| Ref. No. | 58900 |
| Language | English |
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| Find this reference in | Google Scholar | Scirus | Species used from this reference |