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2. The importance of the analysis of N-Nitroso compounds in international research;Bogovski,1972
3. Cyanosis in infants caused by nitrates in well water;Comly;J. Am. med. Ass.,1945
4. Statistical Methods for Research Workers;Fisher,1948
5. Type distribution of coliform bacteria in the feces of warm-blooded animals;Geldreich;J. Wat. Pollut. Control Fed.,1962