. The Composition of sea-water : comparative and descriptive oceanography. Seawater -- Composition. SECT. 4] BIOLOGICAL SPECIES, WATEK-MASSES AND CURRENTS 391 Thysanoessa gregaria. Thysanoessa gregono NORTH RAOFIC. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hill, M. N. (Maurice Neville), 1919-. New York : Interscience Pub.

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Keywords: ., bookcentury1900, bookcollectionbiodiversity, bookleafnumber415