The gravity guiding system
By: Robert M. Martin.
Publisher: Essential Pub. Co.
Published: 1981
Place of publication: San Marino, Calif
Language: eng
Number of pages: 129
Subjects: Posture; Exercise; Gravity -- Physiological effect
Other titles: Cum gravity : living with gravity.
Notes: Reprint, first ed. titled : Cum gravity : living with gravity.