Psychological Aspects of the Problem of Atmospheric Smoke Pollution, b 67675 [Subtitle: Mellon Institute of Industrial Research and School of Specific Industries, Smoke Investigation, Bulletin No. 3] [Full title: Psychological Aspects of the Problem of Atmospheric Smoke Pollution] [Full author's name: J. E. Wallace Wallin] [Author: J. E. Wallace Wallin] [Link: https://www.gutenberg.org/6/7/6/7/67675] [Files: 67675-0.txt; 67675-h.htm] Thanks to Charlene Taylor and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/American Libraries.) Regards, Jacqueline