TY - BOOK AU - Spanjers,Henri ED - International Association on Water Quality TI - Respirometry in control of the activated sludge process: principles SN - 1900222043 PY - 1998/// CY - England PB - IWAQ Pub. KW - Sewage KW - Purification KW - Activated sludge process KW - Microbial respiration KW - Measurement ER -