TY - BOOK AU - Luden,D.R and Other.(ed) TI - Agricultural utilization of sewage sludge: a twenty year study at the rosemount agricultural experiment station university of minnesola PY - 1994/// CY - Minnesota PB - Minnesota agric.Experiment station. KW - Sewage-Purification KW - Sewage KW - Sewage sludge as fertilizer ER -