| Some problems facing the ecologist concerning races and subspecies of brackish-water animals |
| Muus, B.J. (1967). Some problems facing the ecologist concerning races and subspecies of brackish-water animals, in: Lauff, G.H. (Ed.) (1967). Estuaries. American Association for the Advancement of Science Publication, 83: pp. 558-563 |
| In: Lauff, G.H. (Ed.) (1967). Estuaries American Association for the Advancement of Science Publication, 83 AAAS: Washington D.C.. xv, 757 pp., meer |
| In: American Association for the Advancement of Science Publication, meer |
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