00536naa#a2200181#i#450# EN\RIOR\bibl\11938 20250405220620.6 2500-1469 20160625b2016####ek#y0engy0150####ca RUS RU Organization and management of gold mines activity under exploration of placer mines Journal article Moscow Publishing Center RIOR 2016 10 с. Journal article local Kradenykh Irina A. Barchukov Alyeksyey rusjm.ru