🔖 Книга "Preliminary Investigations and Surveys for Increasing the Water Supply of the District of Columbia; Letter from the Secretary of War Transmitting With Letter from the Chief of Engineers, Report on Preliminary Investigations and Surveys for Increasing...".Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.