Salisbury, R.D. The interpretation of topographic maps / by Rollin D. Salisbury and Wallace W. Atwood , Department of the Interior United States Geological Survey, George Otis Smith, director , Professional paper 60; R.D. Salisbury .— : Government printing office, 1908 .— 82 с. — Lang: eng .— URL: https://rucont.ru/efd/131470 (дата обращения: 06.08.2024)