Mannich; Wieder
Chemische Berichte, 1932 , vol. 65, p. 385,389
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Mannich
Patent: HU101428 ;
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Mannich
Patent: US1824676 , 1930 ;
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Lesser,B.
Diss. S. 12
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Mannich
Patent: DE542253 , 1928 ;
Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 18, p. 2986,2987
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Mannich
Patent: DE544692 , 1930 ;