The objective of the two week long 1972 Dag Hammarskjold Seminar was to break away from traditional and theoretical concepts of information work in order to gain a practical insight into communication, especially as it applies to social and economic development. Fifty participants and lecturers from developed and developing countries in Europe and Africa focused on applied communications, management, sensitivity training, the function of work models, and group dynamics in a series of reports, lectures, discussions, and experiments. Following reports of communication programs in each represented country were talks on specific issues, including transition and social change in rural and industrialized societies, the function of communication in the change process, the crucial management problem of internal communications, radio communications, and models as applicable tools. The description of several advertising campaigns illustrated the importance of creativity in communication. Participants scrutinized total communications campaigns in the fields of nutrition, family planning, and traffic. The seminar concluded with a participant evaluation of the program. Some articles in the report are adaptations of the seminar lectures. (SB)