1. 2007-02-28 Re: [R] use tapply in a list which contains many data r-help jim holtman 2. 2007-02-28 [R] use tapply in a list which contains many data.fra r-help Aimin Yan 3. 2007-02-28 [R] use tapply in a list which contains many data.fra r-help Aimin Yan