Bulletin of the Society of Technologists.1913. [T.20].No. 20. October 15

Society of Technologists (Petersburg).Bulletin of the Society of Technologists.-St. Petersburg, 1894-1914.-.1. The people (collection).Electronic copy source: PBOriginal storage location: PSUPS1913. [T.20].No. 20. October 15: year of ed.20. -1913. -651-682 p.: graph., Ill., table., Damn .. -Part of the text is for the last.foreign.ulcer.It turns out twice a month.Bibliogr.In the text and subscription.Note .. - Ex.: without region..1. The people (collection).Electronic copy source: PBOriginal storage location: PSUPS