00517naa#a2200181#i#450# EN\\bibl\66062 20241004170434.5 2074-1618 20130625b2013####ek#y0engy0150####ca RUS RU THE ORIGIN OF MINING Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2013 3 с. Journal article local Lugovoy A A Shablov N N journals.igps.ru