The Unsubstantial Air: American Fliers in the First World War

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Niederbipp is a municipality in the Oberaargau administrative district in the canton of Bern in Switzerland.Niederbipp is first mentioned in 968 as Pippa. In 1302 it was mentioned as Nider-Bippe.Niederbipp has an area, as of 2009, of 17.37 square kilometers (6.71 sq mi). Of this area, 8.2 km2 (3.2 sq mi) or 47.2% is used for agricultural purposes, while 6.55 km2 (2.53 sq mi) or 37.7% is forested. Of the rest of the land, 2.64 km2 (1.02 sq mi) or 15.2% is settled (buildings or roads) and 0.06 km2 (15 acres) or 0.3% is unproductive land.