说明：The_Art_of_R_Programming
说明：The_R_Primer
说明：TheBookOfR
说明：Time Series Analysis - With Applications in R, 2nd Ed
说明：Time series analysis and its applications with R examples(2nd)
说明：Time Series Analysis and Its Applications(3rd)
说明：Understanding_and_Applying_Basic_Statistical_Methods_Using_R
说明：Unsupervised Learning with R
说明：using R for data analysis and graphics
说明：Using R for Introductory Statistics （第二版）