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The new era in world commodity markets
Bergsten, C. Fred - In: Challenge 17 (1974) 4, pp. 34-42
Persistent link: https://www.econbiz.de/10001897720
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Materials conservation : a technologist's viewpoint
Chynoweth, A. G. - In: Challenge 18 (1976) 6, pp. 34-42
Persistent link: https://www.econbiz.de/10002001374