Show FIRST MONTH OF BOAT U-BOAT WAR COSTS U. U S. S By Special News Service W WASHINGTON March larch 17 The 17 The first month of or Germanys Germany's submarine warfare aJ against neutral neutrals has dost Ot ost the United States nearly in export trade Official figures given n out this afternoon afternoon aft art by lh the bureau hureau of foreign n nand and domestic of oC the tho de department de- de of or commerce show that luring during February American exports fell Cell off un In value niue total exports for February were valued fd at aa as against In January |