-
1Published 1970“...[United Nations Educational, Scientific and Cultural Organization. Document] ;...”
Conference Proceeding Book -
2Published 1970“...United Nations Educational, Scientific and Cultural Organization. [Document] Sc.70.XIII.18 A....”
Book -
3Published 1967“...United Nations Educational, Scientific and Cultural Organization. [Document] SC/SP.67XIII.8.A....”
Book