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Hermann Ludwig F Von Helmholtz
Hermann Von Helmholtz Alexander John Ellis
Helmholtz, Hermann von, 1821-1894,Ellis, Alexander John, 1814-1890
Helmholtz, Hermann L. F.; Alexander J. Ellis, Ed. & Trans.; Introd. By Henry Margenau
Helmholtz, Hermann L. F.; Ellis, Alexander J
Hermann Helmholtz
H. : Helmholtz
Helmholtz, H.L.F. And Ellis, A.J.

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By (author) Hermann Ludwig Ferdinand Von Helmholtz
Helmholtz, Hermann L.F. Figures, Notes, Tables