TransliterationRatsionalizatsiya v Germanii. Spravochnik. Per. s nem. pod obshchey red. F.V. Lengnika. Vypusk IV. Proizvodstvo s preobladaniem ruchnogo truda (kustarnoe). Domashnee khozyaystvo. – L.-
In EnglishRationalization in Germany. Handbook. Translated from German, edited by F.W. Lengnik. Issue IV. Manufacturing with a preponderance of manual labor (handicrafts)
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