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Second International Conference on Techno-economic Problems and their impact on the Environment, held in the Grand Hall of the ‘D. A. Cenov’ Higher Institute of Economics and Finance (HIEF), Svichtov, Bulgaria, during 15–20 June 1981
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- Journal:
- Environmental Conservation / Volume 9 / Issue 1 / Spring 1982
- Published online by Cambridge University Press:
- 24 August 2009, p. 73
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- Article
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