1. Three tracer methods for determining detention times in primary clarifiers;Ambrose;Sewage Ind. Wastes,1957
2. American Public Health Association, , Standard methods for the examination of water, sewage, and industrial wastes, 10 1955,
3. Radioactive tracers in flow tests;Archibald;J. Boston Soc. Civ. Eng.,1950
4. Radium as a tracer in sewage flow studies;Bullen;Sew. Ind. Wastes,1954
5. Radon in sewage outfall studies;Bullen;Sew. Ind. Wastes,1954