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Pearl River
1001-9235
1996 Issue 2
da xing dong qun kai wa wei yan wen ding yan jiu
zhao zhen ying
..............page:14
jian li xian dai nong ye shui li de si kao
chen ze jian
..............page:8
shui li jing ji lu zai he fang de shang que
liu zhao lun
..............page:2