4th International Symposium on Livestock Wastes, 1980, April 15-17, 1980, Amarillo Civic Center, Amarillo, TexasAmerican Society of Agricultural Engineersc1981
sponsored by the Commission of the European Communities, Directorate-General for Agriculture and Directorate-General for Research, Science and Education ; edited by J.C. BroganMartinus Nijhoff/Dr. W. Junk Publishers for the Commission of the European Communities1981