nber series on long-term factors in economic development Heroes & cowards : the social face of war / Dora L. Costa & Matthew E. Kahn Technology in war : the impact of science on weapon development and modern battle / Kenneth Macksey [Oranda kangun no fukushoku oyibi gunzō ryakuzu = Uniformen kleuren en geschetste militaire uitrustingen van het officiële Nederlandse leger] Paul Kruger : korte levensschets / met platen guerre au Mexique / Boudeau guerre hispano-américaine de 1898 / Ch. Bride Notes on the Spanish-American war / Office of Naval Intelligence panorama : la guerre Hispano-Americaine Oorzaken van den burgeroorlog in Amerika / door John Lothrop Motley guerre de sécession 1861-1865 / E. Grasset Report of the commission appointed by the president to investigate the conduct of the war department in the war with Spain : Vol. 4 Report of the commission appointed by the president to investigate the conduct of the war department in the war with Spain : Vol. 7