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Showing below up to 20 results in range #21 to #40.
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- (hist) Vortex Filter and Cone Calculator [236 bytes]
- (hist) System Plans DIY [164 bytes]
- (hist) Passive solar greenhouse [133 bytes]
- (hist) Solar Oven [86 bytes]
- (hist) Pedal Operated Washing Machine [63 bytes]
- (hist) Wind energy for water pumping [61 bytes]
- (hist) Yurts [39 bytes]
- (hist) Bamboo Construction [39 bytes]
- (hist) Cob Construction [39 bytes]
- (hist) Malaria Control [36 bytes]
- (hist) Health and Sanitation [36 bytes]
- (hist) Square Foot Gardening [33 bytes]
- (hist) Raised Bed Gardening [33 bytes]
- (hist) Poultry Raising [33 bytes]
- (hist) Irrigation [33 bytes]
- (hist) Smoking Fish [32 bytes]
- (hist) Pottery [31 bytes]
- (hist) Simple Pumps [31 bytes]
- (hist) Water Transport [31 bytes]
- (hist) Water Purification [31 bytes]