pp123-298, 466-546. Spiral bound photostat pages in green light card covers. 4to. Covers are worn and rubbed at edges, a little curled out. Text block edges a little toned. Page faces else internally neat, clean and tight.
Single sided photostat copy of Chapter Six - Potential Pollutants and Appendix G, US Public Health Service Recommended Sanitary Requirements for Waster Treatment Systems of the 1963 report of on Water Quality Criteria from the Californian State Water Board (a compendious reference work). Chapters IX (Pesticides) and X Surface Active Agents) also loosely laid in.
