Echo Sounding: III. Marconi Magnetostriction Supersonic Echo Sounding Equipment for deep sea and Navigation purposes PDF
G. Böhnecke Report on Current measurements at station N° 369 of the German Surveying vessel Meteor (E.) PDF
Alberto Somma Special aspirating thermometer for measuring the Temperature of the Air at Sea (E.) PDF
H. B. Practical Air Navigation and the use of the Aeronautical Charts of the U.S. Coast and Geodetic Survey (R.) PDF