1. Leonardo and the unity of art and science Publication: [Bethesda, Md.] : National Library of Medicine, 2008 Subject(s): ArtArchitectureMathematical ConceptsLeonardo, da Vinci, 1452-1519.
2. Chemical calculations Author(s): Ashley, Raymond Harman, 1881-1947 author Publication: New York : D. Van Nostrand Company, 1918 Subject(s): Mathematical ConceptsChemistry