Lightstone, A. H- Symbolic logic and the real number system/ A.H. Lingtstone. - New York Harper & Row 1965 - ix, 225 p. : ill. ; 24 cm. - Harper's series in modern mathematics . p. 222. LCCN: 66-010605 //r84 Subjects--Topical Terms: Arithmetic--FoundationsLogic, Symbolic and mathematical