Home›Browse›author’s certificate🌐EnglishEnglishРусский日本語EntityQ4056447· pop 5author’s certificateSign in to saveWikidata factsImageRIAN archive 809103 Copyright certificates.jpgShow 2 more factsCommons categoryInvention author’s certificateapplies to jurisdictionSoviet Unionvia Wikidata · CC0Available in 4 languagesРусскийHungarianKazakhUkrainianvia Wikidata sitelinks · CC0