Read Klinkert, Wim - “A Vital Interest of the First Order”: Military Aviation in the Netherlands, 1914–1920 Defending Neutrality Wim Klinkert , (2013) Publication Editor: Brill, The Netherlands, 2013 e-ISBN: 9789004252509 DOI: 10.1163/9789004252509_005 © 2013 Koninklijke Brill NV, Leiden, The Netherlands Klinkert, Wim