See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/256123306 A principal component analysis of sulfur concentrations in the western United States Article in Atmospheric Environment (1967) · January 1986 DOI: 10.1016/0004-6981(86)90107-1 CITATION 1 READS 9 1 author: Michael Richman University of Oklahoma 87 PUBLICATIONS 2,820 CITATIONS SEE PROFILE All content following this page was uploaded by Michael Richman on 22 July 2015. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original docum and are linked to publications on ResearchGate, letting you access and read them immediately.