text: Counsellor, Deputy Permanent Representative, is acting ROMANIA as Chargé d9Affaires a.i. HL.E. M. Aurel-Dragos MUNTEANU. During his absence, M. Nicolae MICU, Minister Counsellor, Deputy Permanent Representative, is acting as Chargé The following Permanent Representatives have returned @ Affaires ai. to New York and have resumed their functions: EL SALVADOR SWEDEN HLE. Dr. Ricardo G. CASTANEDA-CORNEJO HLE. Mr. Jan ELIASSON. During his absence, Mrs. Karin OLDTFELT HJERTONSSON, Minister, is acting SURINAME as Chargé @9Affaires a.i. from 2 July to 3 July, from 9 HLE, Mr. Kriesnadath NANDOE July to 15 July and from 20 August to 2 September ~ 1990, HLE. Mr. Lars-Goran ENGFELDT, Ambassador, VIET NAM Deputy Permanent Representative, is acting as Chargé H.E. Mr. TRINH XUAN LANG @9Affaires ai. from 4 July to 8 July 1990, Mr. Herman af TROLLE, Counsellor, is acting as Chargé d9Affaires ai, from 16 July to 4 August 1990, and Ms. Catherine von HEIDENSTAM, Counsellor, is acting as Chargé **OBSERVERS ad9 Affaires ai. from 5 August to 19 august 1990. SWITZERLAND Appointment: UKRAINIAN SSR M. lv SIEBER H.E. Mr. Guennadi I. OUDOVENKO. During his Third Secretary **Observers are listed herein for convenience of reference. Published at Headquarters, New York 
analysis: This text appears to be a list of updates on diplomatic personnel and their assignments at the United Nations Headquarters in New York. It does not seem to be related to any specific economic, environmental, or social development issue. Instead, it appears to be an administrative or organizational update.