This set of six volumes on Life Span Development and Behavior is a valuable addition to any collection of psychology books. The hardcover binding and original print date of 1978 make it a rare find for collectors, while the special attributes of being an ex-library copy and first edition add to its unique history. The volumes cover a wide range of topics in psychology, making it a useful resource for researchers and students alike. The author, Paul Baltes, is known for his contributions to the field and these volumes are sure to be a prized possession for anyone interested in his work.