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Ringelmann smoke chart
Ringelmann smoke chart
Ringelmann smoke chart
1967
4 S., [1] Faltbl.
Revision of IC 7718: Kudlich, Rudolf. Ringelmann smoke chart. 1955
Digital preservation by Technische Informationsbibliothek (TIB) / Leibniz-Informationszentrum Technik und Naturwissenschaften und Universitätsbibliothek
Book
English
Engineering Index Backfile | 1934
British Library Online Contents | 2004
Engineering Index Backfile | 1938
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Engineering Index Backfile | 1932
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