khu-cv-ths-341-51822 Investigating the effects of Internal and External Green Supply Chain Management Practices on Environmental Cost Savings and Supply Chain Performance by Mediating Role of Agility and Green Supply Chain Resilience in the Hotel Industry (Case Study:4 and 5-star hotels in Tehran city) Investigating the effects of Internal and External Green Supply Chain Management Practices on Environmental Cost Savings and Supply Chain Performance by Mediating Role of Agility and Green Supply Chain Resilience in the Hotel Industry (Case Study:4 and 5-star hotels in Tehran city) 0 https://khu.ac.ir/cv/341/ 1741482472