Abstract
THIS pocket-book will prove useful to all engaged in industries in which electricity is employed. It contains the rules and regulations for electrical installations, the standard wire tables, useful hints about electrical machines and apparatus, and résumés of the theory of steam and gas engines, photometry and pyrometry. The information given is trustworthy.
The Practical Electrician's Pocket Book for 1921.
H. T.
Crewe
Edited By. Twenty-third annual issue. Pp. lxxii + 522. (London: S. Rentell and Co., Ltd., n.d.) 3s. net.
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The Practical Electrician's Pocket Book for 1921. Nature 107, 232 (1921). https://doi.org/10.1038/107232d0
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DOI: https://doi.org/10.1038/107232d0