Sphaera mundi
Sacro Bosco, Joannes de, active 1230; Regiomontanus, Joannes, ...
Renaissance Truths: Humanism, Scholasticism and the Search for ...
Professor Alan R Perreiah
Accounting 101
Michele Cagan
Collision Detection in Interactive 3D Environments
Gino van den Bergen
Four lectures on relativity and space
Steinmetz, Charles Proteus, 1865-1923