ISBN 9780486669809 books & textbook
On Formally Undecidable Propositions of Principia Mathematica and Related Systems
Dover Publications /1992-04-01 Paperback / 80 Pages
isbn-10: 0486669807 / isbn-13: 9780486669809
Dover Publications /1992-04-01 Paperback / 80 Pages
isbn-10: 0486669807 / isbn-13: 9780486669809