Swanson, Guy E. The birth of the gods; : the origin of primitive beliefs. [electronic resource] . — Ann Arbor, : University of Michigan Press, [1960]. — ix, 260 p. : tables. 22 cm. Bibliography: p. [244]-255. LCCN: 60009974 //r94 Subjects--Topical Terms: Religion. LC Class. No.: GN470 / .S9 Dewey Class. No.: 291.2