TY - RPRT TI - User’s guide for Assessment Tract Aggregation GUI (ATA GUI)—A graphical user interface for the AggtEx.fn R script AU - Jason L. Shapiro AU - Robinson PY - 2019 DO - 10.3133/tm7c21 UR - https://pubs.usgs.gov/publication/tm7C21 ID - tm7C21 ER -