TY - BOOK AU - Cook,Theodore Andrea TI - Spirals in nature and art: a study of spiral formations based on the manuscripts of Leonardo da Vinci, with special reference to the architecture of the open staircase at Blois, in Touraine, now for the first time shown to be from his designs, AV - NA2835 .C78 PY - 1903/// CY - New York PB - E.P. Dutton KW - Leonardo, KW - Château de Blois (Blois, France) KW - Spirals KW - Staircases ER -