Sahn, David E.

Methods for the evaluation of the impact of food and nutrition programmes sponsored by the United Nations University on behalf of the United Nations ACC Sub-committee on Nutrition, held at the Massachusetts Institute of Technology, Cambridge, Massachusetts, USA, in September 1981 ; edited by David E. Sahn, Richard Lockwood, and Nevin S. Scrimshaw 1984 Seasonal variability in Third World agriculture edited by David E. Sahn 1989