| Phytoplankton nutrients in estuaries |
| Ketchum, B.H. (1967). Phytoplankton nutrients in estuaries, in: Lauff, G.H. (Ed.) (1967). Estuaries. American Association for the Advancement of Science Publication, 83: pp. 329-335 |
| 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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