TY - JOUR ID - 3154 TI - . JO - Economics Research JA - JOER LA - en SN - 1735-210X AU - arabmazar, ali akbar AD - . Y1 - 2001 PY - 2001 VL - 1 IS - 1 SP - 17 EP - 24 DO - N2 - UR - https://joer.atu.ac.ir/article_3154.html L1 - https://joer.atu.ac.ir/article_3154_4e5fe344c016ce99c562b7e0cfe42349.pdf ER -