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Journal of Hygiene Research
1000-8020
1997 Issue 1
0-16 sui cheng xiang er tong gu zuo kuang wu zhi han liang ji ying xiang yin su de yan jiu
yin shi an
..............
page:45-48
xue xi chong bing qu fen bian chu li de wei sheng xiao guo ping jia
ling bo
..............
page:20-23
