TY - BOOK AU - Hammer, Donald A. TI - Constructed wetlands for wastewater treatment: municipal, industrical and agricultural SN - 0-87371-184-X U1 - 628.35 PY - 1989/// CY - Chelsea PB - Lewis KW - Biological treatment KW - Constructed weltlad KW - Sewage-Purification N1 - Includes bibliographical references and index ER -