Zackback sitting
Subtitle: the revolutionary solution for relieving your pain and improving your posture!
By: Dennis Zacharkow.
Edition: 1st ed.
Publisher: Zackback International; Zackback Intl Inc
Published: 1998
Place of publication: Rochester, MN
Language: eng
Number of pages: 123
Subjects: Sitting position.; Posture.
Notes: Includes bibliographical references (p. 107-115) and index.