Liaison with International and other Organizations - Asian Development Bank - Correspondence - Volume 1
Liaison with International and other Organizations - Ford Foundation - set
Liaison with International and other Organizations - Population Council - Volume 1
Liaison with International and other Organizations - Population Council - Volume 2
Liaison with International and other Organizations - Population Council - Volume 3
Liaison with International and other Organizations - Rockefeller Foundation - 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 - United Nations [UN] General and Economic Commission for Latin America [ECLA] - Correspondence - Volume 1
Liaison with International and other Organizations - University - Johns Hopkins
Liaison with International and other Organizations - USAID / State Department - Volume 1 - 1970 - June 1974
Lieftinck, Pieter - Articles and Speeches (1963 - 1966)