Mieczyslaw Laska General Characteristics of the Southern Baltic Water Level Variations and Daily Mean Water Level Values in the Bay of Gdansk for the 11-Year Period 1955-1965 PDF
J. C. Bhattacharji A Graphical Method of Adjusting a Doubly-Braced Quadrilateral of Measured Lengths when their Weights are also taken into Consideration PDF
Frederick W. Bowden An Improved System of Producing and Printing Loose Leaf Sailing Directions and Corrective Change Pages PDF