1. Agricultural smells from livestock farms;Nielsen;MAFF Booklet 2480,1986
2. Storage of poultry manure with minimum odour;Ludington;ASAE paper 67-932,1967
3. Odour reduction of swine manure by aeration stripping;Phillips;Canadian Agricultural Engineering,1980
4. Storage of piggery slurry;Williams;Agricultural Wastes,1981
5. The biological control of odours emanating from piggery slurry;Williams,1981