Introduction
Fischer, A.; Grimes, S. (2016). Introduction, in: UNESCO-IOC et al. The open ocean: Status and trends. pp. 1-7
In: UNESCO-IOC; UNEP (2016). The open ocean: Status and trends. United Nations Environment Programme (UNEP): Nairobi. ISBN 978-92-807-3531-4. xxxiii, 331 pp., meer
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