#49010Welders assembling a steam boiler at a boiler factory in Sofia.Sign in or register,to downloadAdd to cartRemove from cartLocation: BulgariaEvent date: 02.12.1972Date published: 28.12.2004Author: RIA NovostiCredit: SputnikSource: SputnikOriginal: А72-5871, 6x7 filmMedia: JPEG, 2263x3000px, 1.2MbassemblyboilerfactoryWelder