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2. Studies of annoyance connected with offensive smell from a sulphate cellulose factory;Cederlöf;Nordisk Hygienisk Tidskrift,1964
3. Effect of practice and instruction on olfactory thresholds;Engen;Perceptual and Motor Skills,1960
4. Statistical tables for biological agriculture, and medical research;Fisher,1963
5. Signal detection theory and psychophysics;Green,1966