Lieftinck, Pieter - Articles and Speeches (1963 - 1966)
Liaison with International and other Organizations - USAID / State Department - Volume 1 - 1970 - June 1974
Liaison with International and other Organizations - University - Johns Hopkins
Liaison with International and other Organizations - United Nations [UN] General and Economic Commission for Latin America [ECLA] - Correspondence - Volume 1
Liaison with International and other Organizations - United Nations Educational, Scientific and Cultural Organization [UNESCO] - Correspondence - Volume 1
Liaison with International and other Organizations - Rockefeller Foundation - Correspondence - Volume 1
Liaison with International and other Organizations - Population Council - Volume 3
Liaison with International and other Organizations - Population Council - Volume 2
Liaison with International and other Organizations - Population Council - Volume 1
Liaison with International and other Organizations - Ford Foundation - set
Liaison with International and other Organizations - Asian Development Bank - Correspondence - Volume 1
Liaison Files: U.S. Government - U.S. Senate - Correspondence 01
Liaison Files: U.S. Government - U.S. House of Representatives - Correspondence 02
Liaison Files: U.S. Government - U.S. House of Representatives - Correspondence 01
Liaison files: Bank Fund Collaboration in Assisting Member Countries - Correspondence 01
Liaison files : World Health Organisation (WHO) - Correspondence 01
Liaison Files - United Way - Correspondence - Volume 1
Liaison files : United Nations Environment Program (UNEP) - Correspondence 01
Liaison files : United Nations Development Programme (UNDP) - Correspondence 01
Liaison Files - United Nations Conference on Trade and Development [UNCTAD] - Correspondence - Volume 1
Liaison Files - United Nations Children's Fund [UNICEF] - Correspondence - Volume 1
Liaison files : United Nations - Correspondence 01