回複:不需要,你要查什麽?是影響因子還是引用率?

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It is definitely a paid site, -Not-Free!- 給 Not-Free! 發送悄悄話 (79 bytes) () 05/03/2005 postreply 13:56:40

Some institutions subscribed ! -webofscien- 給 webofscien 發送悄悄話 (28 bytes) () 05/03/2005 postreply 14:38:59

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