1. The solar greenhouse is an appropriate technology tool which can be geared to the needs of people in rural, urban, and suburban areas.
  2. 01 جنوری 1984 Solar greenhouses and sunspaces are popular. One measure of that popularity is the number of people who received grants from the U.S. Department of Energy's Appropriate Technology Small Grants Program. Nearly 200 of the 2,200 total grantees studied, built, managed and improved greenhouses or...