Treatment and use of sewage sludge and liquid agricultural waste : review of COST 68/681 programme, 1972-90 / Commission of the European Communities. Directorate-General Science, Research and Development ; edited by J. E. Hall, P. J. Newman, P. L´Hermite. —  Luxembourg : Office for Official Publications of the European Communities, 1992. —  CIDIMA. —  VIII, 230 p. ; 23 cm. — 
    ISBN 92-826-4142-2
   1. Tratamiento de lodos.2. Residuos agrícolas. I. Hall, J. E., ed.. II. Newman, P. J., ed.. III. Hermite, P. Le, ed.. IV. Comisión Europea.
628.336