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China Petroleum and Chemical Standard and Quality
1673-4076
2002 Issue 7
guo ji biao zhun hua zu zhi (iso) xian kuang ( hua gong bu fen )
zhang jin sheng
..............page:44-48
li de fen xin han liang fen xi zhong de ji ge wen ti
shen su jiang
..............page:36-37