| The balance of animal populations, Part 1 |  |
| Nicholson, A.J.; Bailey, V.A. (1935). The balance of animal populations, Part 1 Proc. Zool. Soc. Lond. 3: 551-598 |
| In: Proceedings of the Zoological Society of London. Academic Press: London. ISSN 0370-2774, meer |
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