Soft-tech

समान संसाधन

• Alternative natural energy sources in building design
  द्वारा: Davis, A. J. (Albert J.)
  प्रकाशित: (1981)
• Energy conservation and use of renewable energies in the bio-industries 2 proceedings of the Second International Seminar on Energy Conservation and the Use of Renewable Energies in the Bio-Industries, held at Trinity College, Oxford, 6-10 September 1982
  प्रकाशित: (1982)
• The independent home : living well with power from the sun, wind and water /
  द्वारा: Potts, Michael
  प्रकाशित: (1993)
• Renewable energy technologies : their applications in developing countries /
  द्वारा: Kristoferson, Lars A.
  प्रकाशित: (1986)
• Renewable energy technologies : their applications in developing countries /
  द्वारा: Kristoferson, Lars A.
  प्रकाशित: (1991)