Sex efficiency through exercises : special physical culture for women / by Th. H. van de Velde ; [photos, by E. Steinemann].

409/426

(debug: view other mode)

The image contains the following text:

PELVIC VER- SION WHILE WALKING (Third Phase). The pelvis is now turned as far as- possible from right to left. The arms are in a line with the knees which are bent.