AL-Sawaf, D., Moyasser AL-Jubori, D. and Majd Saleh, D. (2012) “Human Resources Investment in Industrial Companies towards Volunteering Work in Case of Disaster: a Suggested Model Using Quality Circles”, TANMIYAT AL-RAFIDAIN, 34(106), pp. 27–42. doi: 10.33899/tanra.2012.162033.