TY - RPRT TI - U.S. Geological Survey assessment of global potash production and resources—A significant advancement for global development and a sustainable future. AU - Mark D. Cocker AU - Greta J. Orris AU - Jeff Wynn PY - 2016 DO - 10.1130/2016.2520(10)​ UR - https://pubs.usgs.gov/publication/70160599 ID - 70160599 ER -