The study and practice of yoga By Day, Harvey Books / Hardcover Social Science › Philosophy ISBN: B0007DZNXO / Publisher: University Books, January 1955 Price $16.16 Free Shipping Send to a friend Collectible - Good First Edition With Dust Jacket First edition copy. Collectible - Good. Good dust jacket. 1st US edition. (yoga) $16.16 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.