P. de Vanssay de Blavous Navigation by great circle sailing and radiogoniometric bearings PDF (English)
Schweppe The present state of the study of navigation and nautical meteorology for transoceanic aerial traffic PDF (English)
Jerry H. Service Phenomena observed in connection with radio-acoustic position finding and echo-sounding - Shielding of the Hydrophones PDF (English)
S. Woskressensky Study of the regime of coastal waters by means of fixed automatic devices PDF (English)
