Hardy (G.H.) and E.M.Wright

An Introduction to the Theory of Numbers,

first edition, original cloth, faded, upper hinge, cracked, Oxford, 1938 § Crank (J.) The Mathematics of Diffusion, first corrected edition, original cloth, dust-jacket, cloth faded at top of spine, dust-jacket worn, Oxford, 1957 Cayley (An Elementary Treatise on Elliptical Functions, first edition, original cloth, slightly worn, Cambridge, 1876 § Salmon (George) A Treatise on Conic Sections: sixth edition, original cloth, rubbed, 1879; and a quantity of others similar, v.s. (13)