Diplomatic Documents of SwitzerlandVolume 13 (1939–1940)edited by Prof. J.-F. Bergier, ETH, Zürichbound, with dust cover, 16x24cm,1991. CLII and 1'098 pages.CHF 150.–ISBN 3-7165-0725-3 Documents in Dodis Preface and introduction https://ghost.dodis.ch/res/doc/DDS-13-intro.pdf