https://sana.nlai.ir/handle/123456789/806114 Fri, 19 Jun 2026 04:32:29 GMT 2026-06-19T04:32:29Z https://sana.nlai.ir/handle/123456789/806117 تحقیقات اقتصادی [مجله]. شماره 133 Sat, 01 Nov 1399 00:00:00 GMT https://sana.nlai.ir/handle/123456789/806117 1399-11-01T00:00:00Z