As the revolution in computing advances, it is appropriate to step back and look at the earliest practical aid to computation?? abacus. Its formal western origins lie with the Greeks and the expansion of trade in the seventh century BC, and its...
Dissertations abstracted are: Die Muenzpraegung des Kaisers Nerva by E. Szaivert; The Economics of Food Production on Roman Imperial Estates in North Africa by Dennis Patrick Kehoe; A Retreat from the Wilderness: Pattern in the Domestic...
Dissertations abstracted are: Treasure of the Land of Darkness: A Study of the Fur Trade and its Significance for Medieval Russia (X-XVI Centuries) by Janet L. B. Martin; The North American Fur Trade 1804-1821: A Study in the Life-Cycle of a...