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Ningxia Journal of Agriculture and Forestry Science and technology
1002-204X
1999 Issue 4
ning xia wu shui guan gai dui tu rang he nong chan pin zhi liang de ying xiang
sun zheng feng
..............
page:7-11
zuo zuo duo tang hua xue yan jiu de xian zhuang
meng xie zhong
..............
page:22-25