Peter S. B. Digby: Midnight-sun illumination above and below the sea surface in the Sörgat, N.W. Spitsbergen, and its significance to plankton.
With 9 Figures in the Text.
Hilsen fra Peter S. B. Digby på tittelblad.
Department of Biology, St. Thomas`s Hospital Medical School, London.
Blackwell Scientific Publications, Oxford.
J. Anim. Ecol. 29, 273-297, November 1960. 8vo. Orig. omslag.