TY - BOOK ED - Centre for Housing, Building, and Planning (United Nations) TI - Human settlements: the environmental challenge SN - 0333140710 U1 - 307 PY - 1974///] CY - [London] PB - Macmillan [for the] Centre for Housing, Building and Planning, United Nations Department of Economic and Social Affairs KW - Environmental policy KW - Human settlements KW - Planning N1 - Includes bibliographical references ER -