Reasons for concern about the state of the North Sea environment: an introduction
ten Hallers-Tjabbes, C.C. (1987). Reasons for concern about the state of the North Sea environment: an introduction, in: Peet, G. (Ed.) (1986). The status of the North Sea environment: reasons for concern: proceedings of the 2nd North Sea Seminar 1986, Rotterdam, 1, 2, 3 October 1986: vol. 1. pp. 10-11
In: Peet, G. (Ed.) (1986). The status of the North Sea environment: reasons for concern: proceedings of the 2nd North Sea Seminar 1986, Rotterdam, 1, 2, 3 October 1986: vol. 1. Werkgroep Noordzee: Amsterdam. ISBN 90-70643-02-2. 54 pp., meer
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