Heiser, J. B., Janis, C. M., & Pough, H. F. (2006). Vertebrate life (6.).
Chicago Edition CitationHeiser, John B., Christine M. Janis, and Harvey F. Pough. Vertebrate Life. 6. Delhi, Pearson Education, 2006.
Deismireacht MLAHeiser, John B., et al. Vertebrate Life. 6. 2006.
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