World Science 2000 Issue 1 shu zi nong ye 21 shi ji de xin xing nong ye mo shi

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World Science
1000-0968
2000 Issue 1

shu zi nong ye 21 shi ji de xin xing nong ye mo shi
zheng wen bo

..............page:38-39

yu ai zheng zhi liao fu zuo yong kang heng de xin liao fa
Den Ferber

..............page:32

ai zheng de ba xiang xing ji yin zhi liao
shen jing ping

..............page:31