Copperfield, David
How to pump water with solar electricity by David Copperfield - Rough and Ready Well-Being Productions c1983 - 36p. ill. - Electrical independence booklets 13 .
Cover title :Solar-electric water pumping
Solar energy
Pumping machinery, Electric
How to pump water with solar electricity by David Copperfield - Rough and Ready Well-Being Productions c1983 - 36p. ill. - Electrical independence booklets 13 .
Cover title :Solar-electric water pumping
Solar energy
Pumping machinery, Electric