Florian Cajori On the History of Gunter's Scale and the Slide Rule during the Seventeenth Century Подробнее
Burpee Lawrence Johnstone Pathfinders of the Great Plains: A Chronicle of La Vérendrye and his Sons Подробнее
Frank T. Bullen The Log of a Sea-Waif: Being Recollections of the First Four Years of My Sea Life Подробнее
