Jacobson, Edmund You must relax a practical method of reducing the strains of modern living. - [4th ed., rev. and enl.] - New York McGraw-Hill [1957] - 269 p. illus. 21 cm. Includes bibliography. LCCN: 57012584 /L/r81 Subjects--Topical Terms: RelaxationStress Physiology LC Class. No.: RC351 / .J27 1957 Dewey Class. No.: 613.7/9