37 С документом UNEP/WHO/UN-Habitat/ Water Supple and Sanitation Collaborative Council Guidelines on Municipal Wastewater Management можно ознакомиться по адресу www.gpa.unep.org/training/documents/Guidelines_Municipal_Wastewater_Mngt%20version3.pdf.
37 环境规划署/卫生组织/人居署/供水和环卫合作理事会的《城市废水战略行动计划》，见www.gpa.unep.org/Training/documents/Guidelines_Municipal_Wastewater_Mang%20Version3.pdf。