00481cam a2200157ua 4500003000400000008004100004020001800045041000800063082001900071100001900090245009800109260005600207300001200263700002400275700002400299OSt241101b        |||||||| |||| 00| 0 eng d  a0-8213-2101-3  aeng  a621.47bBAR/SO  aBarlow, Roy  .  aSolar pumping: Introduction and update on the technology, performance, costs and economics /   a : bIntermediate technology publications , c1993.  a153 ; .1 aDerrick, Anthony  .1 aMcNelis, Bernard  .