ISBN 9027703159 books & textbook
Moritz Schlick Philosophical Papers: Volume 1: (1909–1922) (Vienna Circle Collection, 11a)
Schlick, Moritz Mulder, Henk L. van de Velde-Schlick, B.F.B.
Springer /1978-12-31 Paperback / 416 Pages
isbn-10: 9027703159 / isbn-13: 9789027703156