Boston, MA: Harvard / New Paradigm, 2012. Later Printings. Paperback. Octavo. 6 x 9 in. xix, 266 pp.; 517 pp. Fine in original lettered wrappers. Item #1694
Metaphysica I: God and Evil; Metaphysica II: God and Good. Summa Metaphysica Series by Birnbaum, Book I originally published in 1988 and Book II originally published in 2005. The Quest for Potential theory.