Movements or exercises, according to Ling's system for the due development and strengthening of the human body, in childhood and in youth / by M. Roth.
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Movements or exercises, according to Ling's system for the due development and strengthening of the human body, in childhood and in youth / by M. Roth. Credit: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.. Public Domain Mark