by Ruff, John K.

by Booth, Harold Simmons.

by Participatory Development Forum (Kotte, Sri Lanka)

by National Research Council (États-Unis).

by Committee on Applied and Theoretical Studies, National Research Council.

by National Research Council.

by National Research Council (U.S.).

by National Research Council (U.S.).

by National Research Council (U.S.).

by National Academies Press (U.S.)