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Appropriate technology directory
Jéquier, Nicolas; Blanc, Gérard - 1979
Persistent link: https://www.econbiz.de/10000100673
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Appropriate technology directory ; [1]
Jéquier, Nicolas - 1979
Persistent link: https://www.econbiz.de/10000100674
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Appropriate technology directory ; 2
Jéquier, Nicolas; Blanc, Gérard - 1984
Persistent link: https://www.econbiz.de/10000100675