How to construct a cheap wind machine for pumping water.
Contributors: McGill University. Macdonald College. Brace Research Institute.
Edition: [3rd ed.]
Series: Do-it-yourself leaflet -- L-5
Publisher: Brace Research Institute, Macdonald College of McGill University
Published: 1979
Place of publication: Ste Anne de Bellevue (Que .)
Language: eng
Notes: Previous ed;1973.