DescriptionEB1911 - Volume 12.djvu English: Volume 12 (Gichtel, Johann — Harmonium) of the 1911 Encyclopædia Britannica Date 1911 Source Internet Archive:...
English EB1911 - Forging - Fig. 12 determination method: SHA-1...
Encyclopædia Britannica, volume 12, pages 771 ff. https://en.wikisource.org/wiki/Page:EB1911_-_Volume_12.djvu/796 ff. Author AnonymousUnknown author...
Encyclopædia Britannica volume 12, Grasses article, pages 370 ff.; https://en.wikisource.org/wiki/Page:EB1911_-_Volume_12.djvu/387 ff. Author AnonymousUnknown...
Britannica volume 12, Graptolites article, page 366; https://en.wikisource.org/wiki/Page:EB1911_-_Volume_12.djvu/383. Author AnonymousUnknown author...
Source 1911 Encyclopædia Britannica, volume 12, pages 771 ff. https://en.wikisource.org/wiki/Page:EB1911_-_Volume_12.djvu/796 ff. Author AnonymousUnknown author...
Encyclopædia Britannica, volume 12, pages 771 ff. https://en.wikisource.org/wiki/Page:EB1911_-_Volume_12.djvu/796 ff. Author AnonymousUnknown author...
Britannica volume 12, Glazing article, pages 166–167. https://en.wikisource.org/wiki/Page:EB1911_-_Volume_12.djvu/133 & 134 Author AnonymousUnknown author...
Encyclopædia Britannica, volume 12, pages 771 ff. https://en.wikisource.org/wiki/Page:EB1911_-_Volume_12.djvu/796 ff. Author AnonymousUnknown author...
