The state of the hearing organ in workers of the Klopfer apparatus
N. A. Bobrovsky
Kazan medical journal ›› 1930, Vol. 26 ›› Issue (5-6) : 592 -597.
The rationalization of telegraph business in our Union, the transition from the old Morse apparatus to the Klopfer apparatus, raised the question: if Klopfer is profitable in operational and economic terms, then is the transition to it rational from the point of view of the worker's health.
Bobrovsky N.A.
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