. . "Military aircraft and their use in warfare; an address by Major General Mason M. Patrick, on the occasion of the centenary celebration of the founding of the Franklin institute and the inauguration exercises of the Bartol research foundation, September 17, 18, 19, 1924" . . . . . "Military aircraft and their use in warfare an address by Major General Mason M. Patrick, on the occasion of the centenary celebration of the founding of the Franklin institute and the inauguration exercises of the Bartol research foundation, September 17, 18, 19, 1924"@en . . . . . . .