TY - BOOK AU - O’Brien,D. ED - Centre National de la Recherche Scientifique TI - Theories of weight in the ancient world four essays on Democritus, Plato, and Aristotle : a study in the development of ideas SN - 90-04-06132-0 CY - Paris PB - Belles Lettres N1 - V. 1. Democritus : weight and size : an exercise in the reconstruction of early Greek philosophy; V. 2. Plato : weight and sensation : the two theories of the 'Timeaus' ER -