ftp://ftp.scientificlinux.org/disk/disk4/linux/scientific/5rolling/x86_64/contrib/SRPMS/R/  direct

14.88 MB  2008-02-09R-2.6.2-1.sl5.src.rpm  info  browse  123 mirrors
 R - A language for data analysis and graphics
 /Main/Other/src/Applications/Engineering/

15.67 MB  2008-05-29R-2.7.0-1.sl5.src.rpm  info  browse  42 mirrors
 R - A language for data analysis and graphics
 /Main/Other/src/Applications/Engineering/