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Haskelberg
Journal of the American Chemical Society, 1948 , vol. 70, p. 2812
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Grigorowski; Margolina; Magidsson
Patent: SU50851 , 1936 ;
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Grigorowski; Margolina; Magidsson
Chem. Zentralbl., 1938 , vol. 109, # II p. 768
