PHILOSOPHIA NATURALIS.

Vaduz, Liechthenstein: The Gregg Press Establishment. (1963). 112 pp. Hardcover. Reprint of Rome, 1637 edition in Latin. Binding shows minimal shelf-wear to edges and spine, with light soiling to rear cover.  Interior is clean, bright and free of stray markings. All in all, this is a fine copy of William of Okham's neglected masterpiece and intended magnum opus of natural philosophy.