Barlow, R., & I. McNelis, B. I. D. Solar pumping [fotocopiado]: An introduction and update on the technology, performance, costs, and economics / Roy Barlow, Bernard McNelis and Anthony Derrick. London : The Intermediate Technology Development Group.
Chicago Style CitationBarlow, Roy, and Bernard II. Derrick I. McNelis. Solar Pumping [fotocopiado]: An Introduction and Update On the Technology, Performance, Costs, and Economics / Roy Barlow, Bernard McNelis and Anthony Derrick. London : The Intermediate Technology Development Group.
MLA CitationBarlow, Roy, and Bernard II. Derrick I. McNelis. Solar Pumping [fotocopiado]: An Introduction and Update On the Technology, Performance, Costs, and Economics / Roy Barlow, Bernard McNelis and Anthony Derrick. London : The Intermediate Technology Development Group.