1. Cost of clean air, 1st report of Secretary of Health, Education, and Welfare to Congress in compliance with Public law 90-148, Air quality act of 1967 [with list of references; prepared by National Air Pollution Control Administration]. Bookmark Corporate/Agency Authors: Health, Education and Welfare Department Publisher: Health, Education and Welfare Department Date: June 1969 SuDoc number: FS 1.35:969