A journal devoted to Theory and Computation in Chemistry Physics and Moecular Biology. History of the Journal. Quantum Chemistry has its origin in the study of the covalent bond of the hydrogen molecule by Heitler and London in 1927. This field of study falls between the traditional areas of mathematics physics chemistry and molecular biology. With the advent of computers Quantum Chemistry rapidly developed into an independent and thriving area of study. The International Journal of Quantum Chemistry was founded by Per-Olov Löwdin to provide a venue dedicated to research in this multidisciplinary field. The Journal has published more than 80 regular and 60 special volumes since its launch in 1967. Program and Policies. Quantum Chemistry is a discipline concerned with the quantum mechanical description of the structure and dynamics of atoms molecules and condensed matter. Quantum Chemistry embodies theoretical studies and computer simulations of atomic and molecular systems and their interactions. Recent developments in molecular biology call for new applications where quantum mechanical components interface with molecular mechanics and modeling. The progress of new fields such as theoretical chemical physics omputational chemistry and theoretical materials sciences depends on methods of Quantum Chemistry and influences activities in Quantum Chemistry. This interdisciplinary character of research in Quantum Chemistry places it at the intersection of the well-established sciences of physics chemistry and biology. The Journal accepts original papers with emphasis on formal and computational quantum mechanics and its application to the theory and modeling of the structure and dynamics of atoms molecules and condensed matter. There are no page charges. Authors receive 50 complimentary reprints and additional reprints may be purchased. Standard refereeing procedures are used and - provided the proofs are returned promptly by the authors - papers are published within 6 months after acceptance. The Journal's style follows that of the American Institute of Physics. The Journal presently publishes 30 issues each year forming five volumes. It regularly publishes the proceedings of the annual Sanibel Symposia and also proceedings of several other international symposia such as congresses of the International Academy of Quantum Molecular Science the International Society of Theoretical Chemical Physics and the Working Party on Computational Chemistry of the Federation of European Chemical Societies. The publication policies of the journal are regulated by the working Editors and an Editorial Board. The members of the Editorial Board serve staggered terms of five years each. There are two Editorial Offices to which manuscripts may be submitted: Department of Quantum Chemistry U