[On water transmission of vessel warning signals, with list of stations sending submarine signals in U.S. and Europe] Record is based on bibliographic data in ProQuest U.S. Executive Branch Documents, 1789-1909. Reuse except for individual research requires license from ProQuest, LLC.
Electronic reproduction. [Bethesda, Md.] : ProQuest, 2012. digital, PDF file. ProQuest U.S. Executive Branch Documents, 1789-1909. Mode of access: World Wide Web via ProQuest website.