search for: ptcl5

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2009 Sep 25
2
Nested select
my data : library(doBy) lines<-"lo ptcl5 ptcl99 variable 430 . 8787 a 430 342 2343 m 430 . 89 mr 431 456 4774 a 431 299 2777 m 431 99 96 mr 432 333 3433 a 432...