The purpose of this monograph has been to provide a reasonably comprehensive summary of the theory of inventory management of perishables. Admittedly, much of the focus has been on my own work. However, I have tried to cover the primary developments in the field as I see them. As the field has grown enormously since I did the formative work on my doctoral dissertation some 40 years ago, I have undoubtedly omitted citing some significant references. I apologize in advance for this. While I expect there to be errors of omission, I hope there are few errors of commission.