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E (Stack)Browning, John
How to Work with the Spectroscope. A Manual of Practical Manipulation with Spectroscopes of all Kinds, including Direct-Vision Spectroscopes Chemical Spectroscopes Solar Spectroscopes Star Spectroscopes Automatic Spectroscopes Micro Spectroscopes Screen Spectroscopes Bessemer Spectroscopes And Accessory Apparatus
London: John Browning, n.d. [1878]. Continuously paginated catalogue pp. 49-66, dated January 1878.
[1988-147]
1878?