1. Standard methods for the examination of water and waste water;APHA,1971
2. Correlating odor intensity index and odorous components in stored dairy manure;Barth;Transactions of the American Society of Agricultural Engineers,1974
3. Correlating odor intensity index and odorous components in stored dairy manure;Barth;Transactions of the American Society of Agricultural Engineers,1974
4. Institute of Environmental Health Officers Agricultural Odours Survey, April 1980–March 1981;Battersby,1981
5. Organoleptic measurement of odour intensity;Bedborough,1978