1. Renewable Energy Sources of the World's Poor: A Review of Current International Development Assistance Programs;Ashworth,1979
2. Delivering the Renewable Energy Promise: Institutional Options for Providing New Energy Technologies to Developing Country Users;Ashworth,1981
3. Matching Renewable Energy Systems to Village-Level Energy Needs;Ashworth,1980
4. Developing Common Information Elements for Renewable Energy Systems: Summary and Proceedings of SERI/AID Workshop, 20–22 February 1980;Ashworth,1980