Hints for the improvement of trusses : intended to render their use less inconvenient, and to prevent the necessity of an understrap : with the description of a truss of easy construction and slight expense, for the use of the labouring poor, to whom this little tract is chiefly addressed / by James Parkinson.

Hints for the improvement of trusses : intended to render their use less inconvenient, and to prevent the necessity of an understrap : with the description of a truss of easy construction and slight expense, for the use of the labouring poor, to whom this little tract is chiefly addressed / by James Parkinson. 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