Bayer Aktiengesellschaft
Patent: US4194008 A1, 1980 ;

Bayer
Patent: DE2639748BE858362 , 19781978 ;
Chem.Abstr., 1979 , vol. 90, # 151849

Bayer
Patent: DE2639748BE858362 , 19781978 ;
Chem.Abstr., 1979 , vol. 90, # 151849
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Bayer AG
Patent: DE2657772 , 1978 ;
Chem.Abstr., 1978 , vol. 89, # 108756
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Bayer
Patent: DE2730620 , 1979 ;
Chem.Abstr., 1979 , vol. 90, # 151852