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  • A Walton
  • The British journal of nutrition
  • 1949
Asdell, S. A,, Bogart, R. & Sperling, G. (1941). 1Mem. Cornell ugric Exp. S ta . no. 238. Bodenheimer, F. S. & Sulman, F. (1946). Ecology, 27, 235. Bonsma, J. C. (1948). Personal communication.(More)