Jackson, Edgar N. 1910-1994. Understanding prayer; an exploration of the nature, disciplines, and growth of the spiritual life [by] Edgar N. Jackson. - Cleveland, World Pub. Co. [1968] - ix, 212 p. 22 cm. LCCN: 68026842 Subjects--Topical Terms: Prayer--Christianity. LC Class. No.: BV210.2 / .J3 1968 Dewey Class. No.: 264/.1