Prohorovy:Materialy k istorii Prohorovskoj Trehgornoj manufaktury i torgovo-promyshlennoj deyatelnosti semi Prohorovyh.1799-1915gg. In Russian/ Prokhorov:Materials to history Prokhorov Trekhgornij manufactory and and-industrial of family Prokhorovs.1799-1915years. In Russian, n/a - landofmagazines.com

TransliterationProhorovy:Materialy k istorii Prohorovskoj Trehgornoj manufaktury i torgovo-promyshlennoj deyatelnosti semi Prohorovyh.1799-1915gg. In Russian

In EnglishProkhorov:Materials to history Prokhorov Trekhgornij manufactory and and-industrial of family Prokhorovs.1799-1915years. In Russian, n/a

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