London: Macmillan, Reprint, 1950, hardcover, octavo, 303pp., illustrated with b&w figures. Book good with mild rubbing to boards, mild wear to spine ends and corners, binding just tender, previous owner's signature to front pastedown, text has some mild toning and underlining and marginalia throughout, small stamp to top of textblock. DJ VG with toning and rubbing, spot of soil to spine, hint of edge wear. Previous owner was Henry A. Bent, the world's principal investigator of exclusive orbital models of molecules. A recipient of several of his nation's leading awards in chemical education, he has served as a chair of the American Society's Division of Chemical Education, its Committee of Professional Training, and its Presidential Committee on Periodic Table Column Labels. He is a fellow of the American Association for the Advancement of Science and a member of a family of chemists. Good / Very Good.