Engeln, H. P., Company. *Cab.37.23.1 Chart of nerve centers for use in vibratory treatment by the Engeln Perfect Vibrator. = Cleveland, Ohio. 1904. Size, 24 & 1854 inches.
[This work is kept on the Special Libraries Floor.]
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This card was printed at the Boston Public Library, October 16, 1906. G2601 — Engeln Perfect Vibrator. — Nervous system.