Garstin, E. J. Langford. Theurgy, or the Hermetic practice : a treatise on spiritual alchemy / E.J. Langford Garstin ; foreword by Edward Dunning. - 1st American pbk. - Berwick, Me. : Ibis Press, c2004. - xvi, 144 p. ; 22 cm. Includes index. ISBN: 0892540915 (pbk. : alk. paper) LCCN: 2004006401 Subjects--Topical Terms: Theurgy.Hermetism. LC Class. No.: BF1623.T56 / G37 2004 Dewey Class. No.: 135/.45