Tomiju Hashimoto, Yoshinobu Maniwa, Osamu Omoto, Hidekuni Noda Echo Sounding of Frozen Lake from Surface of Ice PDF (English)
Jan M. Jordaan Experience with Recording of Storm Waves, Swell and Tide Using an Inverted an Inverted Echo-Sounder off Durban (South Africa) PDF (English)
J. C. Bhattacharji A Method of Simultaneous Determination of Astronomical Latitude, Azimuth and Time from Observations of an Unknown Star PDF (English)
Nikola Čubranić Connection of Elevations of the Middle Dalmation Islands with Elevations of the Continent PDF (English)
