Aerosol sampling in animal houses (proceedings of a workshop held at the University of Bristol, Department of Animal Husbandry, 26th–28th July, 1988) : edited by C. M. Wathes and J. M. Randall for the Commission of European Communities (EUR 11877 EN), published by the Office for Official Publications of the European Communities, Luxembourg; Agent: Her Majesty's Stationery Office, London; 1989; 141 pp; ISBN 92-825-9866-7; ECU 12.50.