TY - BOOK TI - EMWater trainer's toolkit : efficient management of Wastewater AV - TD745.E49 2007 PB - InWent KW - Sewage - Purification - Study and teaching KW - Sewage disposal - Study and teaching KW - Water - reuse KW - TD N1 - The materials of this collection come from a number of organizations - t.p. verso; Includes bibliographical references; CD-ROM is located in Reference Office (Main Floor) ER -