Simpson, Jan
Appropriate community technologies sourcebook / by Jan Simpson with Ken Bossong - Updated ed. - Washington, D.C. : Citizens' Energy Project, 1982 - v.1
0899880568
Appropriate technology--United States
Community development--United States
Appropriate community technologies sourcebook / by Jan Simpson with Ken Bossong - Updated ed. - Washington, D.C. : Citizens' Energy Project, 1982 - v.1
0899880568
Appropriate technology--United States
Community development--United States