00701nam0-2200253 --4500991014785890332120161122110849.0978149191059720161122d2015----kmuy0itay5050----baengUSR packagesorganize, test, document, and share your codeHadley WickhamSebastopolO'Reilly Media2015XIV, 182 p.24 cmR <linguaggio computer>005.13Wickham,Hadley475277ITUNINARICAUNIMARCBK9910147858903321VI E 16401158/2016FSPBCFSPBCR packages1467507UNINA