Professor E. U. Condon's The Theory of Atomic Spectra was the first comprehensive book on the electron structure of atoms, and has become a world-renowned classic. Originally published in 1980, Atomic Structure was the late Professor Condon's final contribution to the literature of this field. Completed by his colleague and former student Halis Odabşi, this book was one of the first integrated accounts of the subject to include such developments as group theory concepts and Racah methods. In addition, Professor Condon presents valuable background information on the history and development of quantum theory. Atomic Structure provides an excellent survey of the field and Professor Condon's unique personal insights will make the book attractive both to practising physicists and advanced undergraduate students.