'The authors are clearly leaders in the field. … the book is well-written with vast numbers of illustrations as well as very useful worked examples. The impressive level of detail for individual systems can sometimes mask the underlying story, but salvation usually comes in the form of incisive summaries at the end of various major sections. This graduate-level book will be particularly useful to those who wish to understand NBO-based arguments presented in the literature and it is likely to be an invaluable resource for anyone who runs, or wishes to run, NBO analysis for themselves.' Chemistry World