回複:不需要,你要查什麽?是影響因子還是引用率?
所有跟帖:
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It is definitely a paid site,
-Not-Free!-
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05/03/2005 postreply
13:56:40
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Some institutions subscribed !
-webofscien-
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05/03/2005 postreply
14:38:59