Leonov A. I. i dr. Besstupenchatye rychazhno-friktsionnye peredachi./Leonov A. I. et al. Continuous lever-friction gears. In Russian (ask us if in doubt). - landofmagazines.com

TransliterationLeonov A. I. i dr. Besstupenchatye rychazhno-friktsionnye peredachi.

In EnglishLeonov A. I. et al. Continuous lever-friction gears. In Russian (ask us if in doubt).

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