Brown, Martin. World phosphates supply to the year 2000. Paris: Organisation for Economic Co-operation and Development, 1988. 127 s. Development Centre studies.
Brown, M. (1988). World phosphates supply to the year 2000. Paris: Organisation for Economic Co-operation and Development.
Styl ChicagoBrown, Martin. World Phosphates Supply to the Year 2000. Paris: Organisation for Economic Co-operation and Development, 1988.
Citace podle MLABrown, Martin. World Phosphates Supply to the Year 2000. Paris: Organisation for Economic Co-operation and Development, 1988.
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