1. Beneficial effect of enzymatic on glass model septic tank operation;Publ. Wks,1952
2. How enzymes improve sludge digestion;Bryan;Publ. Wks,1952
3. Microbiological Methods;Collins,1984
4. Controlling a grease problem;Corder;Wat. Swge Wks,1955
5. Biocatalysts in sludge digestion;Grune;Swge Indust. Wastes,1953