1.

図書
図書
1. A treatise on Bessel functions and their applications to physics
by Andrew Gray and G.B. Mathews
出版情報: London : Macmillan, 1895
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2.

図書
図書
2. The theory and practice of absolute measurements in electricity and magnetism
Andrew Gray
出版情報: London ; New York : Macmillan, 1888-1893
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