Technology for Solar Energy Utilization, Document NO. ID/202, File 23-563, 1977 conference report, 155 pages, 1978, in English, French, or Spanish, free to local groups in developing countries, $12.00 to others, Sales No. 78IIB, from United Nations Industrial Development Organization, P.O. Box 300, A-1400, Vienna, Austria. Solar Water Heaters in Nepal, File 23-560, book, 27 pages, by Andreas Bachmann, 1977, free photocopies from SDC; also available from SKAT and ITDG. A Solar Water Heater Workshop Manual, File 23-559, construction manual, 82 pages, 1979, Ecotope Group, out of print.