TY - CHAP T1 - Data Management, Manipulation, and Exploration with dplyr T2 - Getting Started with R PY - 2017/01/26 AU - Beckerman AP AU - Childs DZ AU - Petchey OL ED - DO - DOI: 10.1093/acprof:oso/9780198787839.003.0003 PB - Oxford 小欧视频 Press SP - 57 EP - 78 Y2 - 2025/04/09 ER -