Policies and means of promoting technical progress /
United Nations.
- New York : UN, 1968.
- 159 p. ; 28 cm.
- [Document] - United Nations ; A/CONF.70/15 .
77351279
Housing--Congresses.
Community development--Congresses.
309.22 / UNP
77351279
Housing--Congresses.
Community development--Congresses.
309.22 / UNP