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	[книга]
	7-th international scientific conference SGEM; 2007 Modern management of mine producing, geology and environmental protection
	International scientific conference Surveying, Geology, Ecology, Management, VII. Albena. 2007
	[София : STEF92 Technology]
	2007
ISBN:	954-918-181-2, 978-954-91818-1-4
:	Прил..  CD-ROM
	Екология - конференции Геология - конференции Минно дело

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