Jones, Rufus Matthew, 1863-1948. A call to what is vital. - New York, Macmillan Co., 1948. - ix, 143 p. 20 cm. LCCN: 48008601 Subjects--Topical Terms: Christianity--Essence, genius, nature.Religion and science. LC Class. No.: BR121 / .J66 Dewey Class. No.: 230