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Massage & exercises combined : a permanent physical culture course for men, women and children health-giving, vitalizing, prophylactic, beautifying a new system of the characteristic essentials of gymnastic and Indian Yogis concentration exercises combined with scientific massage movements with 86 illustrations and deep breathing exercises / by Albrecht Jensen. Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Source: Wellcome Collection.