Gran, H.H., 1912
Gran, H.H. (1912). Pelagic plant life. In: The depths of the ocean: a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic with contributions from Professor A. Appellöf, Professor H. H. Gran and Dr. B. Helland-Hansen. (Murray, J. & Hjort, J. Eds), pp. 307-386. London: Macmillan and Co., Limited, St Martin's Street.