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F. A. J. Armstrong & H. W. Harvey , 1950. The cycle of phosphorus in the waters of the English Channel. Journ. Mar. Biol. Assoc., Vol. 29, pp.
W. R. G. Atkins , 1938. Photoelectric measurements of the seasonal variations in daylight around 0·41 μ from 1930 to 1937. Proc. Roy. Soc. London, Vol. 165, pp. 453–65.
W. J. Copenhagen & L. D. , 1949. Variations in phytoplankton of Table Bay. Trans. Roy. Soc. S. Africa, Vol. 32, pp. 113–23.
H. Dutton & W. Manning , 1941. Evidence for carotenoid-sensitized photosynthesis in the diatom Nitzschia closterium. Amer. Journ. Bot., Vol. 28, pp. 516–26. See also Strain & Manning, 1942. Journ. Amer. Chem. Soc, Vol. 64, p. 1235.
A. C. Evans , 1948. Studies on the relationship between earthworms and soil fertility. Ann. Applied Biol., Vol. 35, pp. 1–13.
F. Gross , 1937. The life-history of some marine plankton diatoms. Phil. Trans. Roy. Soc. London B, Vol. 228, pp. 1–47.
B. H. Ketchum & A. C. Redfield , 1949. Some chemical and physical characteristics of algae grown in mass cultures. Journ. Cell. Comp. Physiol., Vol. 33, pp. 281–300.