Possible Case Study Sites, Plovdiv Region (IMAGE) Pensoft Publishers Caption Exploring possible case study sites in the Plovdiv region, Bulgaria. Credit Anja Schmidt Usage Restrictions CC-BY 4.0 License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.