Tej Singh. Secrets of Patanjali Yoga / Tej Singh. - Farrykhabad : Yoga-Iyotish-Ayurved Ashram, 1969. - xv, 0173 p. ; 21 cm. ISBN: [N.A.] : [N.A.] Subjects--Topical Terms: Aasan.Yoga--Therapeutic use.Hinduism.Philiosophy, Hindu. Dewey Class. No.: VB 181.452