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Publikováno v:
Engineering & Mining Journal (00958948). May2019, Vol. 220 Issue 5, p48-54. 6p.
Publikováno v:
Engineering & Mining Journal (00958948). Dec2007, Vol. 208 Issue 10, p8-14. 3p.
Publikováno v:
Engineering & Mining Journal (00958948). Apr2017, Vol. 218 Issue 4, p5-5. 2/3p.
Publikováno v:
Engineering & Mining Journal (00958948). Dec2010, Vol. 211 Issue 10, p42-43. 2p.
Publikováno v:
Engineering & Mining Journal (00958948). Sep2006, Vol. 207 Issue 7, p72-73. 2p.
Publikováno v:
Engineering & Mining Journal (00958948). Apr2006, Vol. 207 Issue 3, p5-6. 2p.
Publikováno v:
Engineering & Mining Journal (00958948). Feb2002, Vol. 203 Issue 2, pww 12. 2p. 1 Black and White Photograph, 1 Graph.