"Независими работнически професионални съюзи (НРПС)"@en . . . . . "фонд 38Б " . "842 a.u."@en . " http://www.archives.government.bg/6-CSA" . . . "United States Holocaust Memorial Museum http://collections.ushmm.org/search/catalog/irn514503"@en . . "Records from the T︠S︡entralen dŭrzhaven arkhiv (Central State Archives), Bulgaria, Fond 38, Opis 1. "@en . "Contains appeals against military preparations, military fascist government, and increasing government spending for military preparations."@en . . . .