China 'GB/T 3654.5-1983
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 3654.5-1983
Methods for chemical analysis of ferroniobium--The molybdenum blue photometric method for the determination of the phosphorus content 铌铁化学分析方法 钼蓝光度法测定磷量
Issued Date:1983-05-02
Implemented Date:1984-03-01
Issued by:
The Standardization Administration of the People's Republic of China