& AL_BADRI, AL_Jubori. GRAVITY MODEL IN FOREIGN TRADE (APPLICABALE CASE ABOUT THE SKINS IN IRAQ DURING THE PERIOD (1990-2014). IRAQI JOURNAL OF AGRICULTURAL SCIENCES, [S. l.], v. 48, n. 4, 2017. DOI: 10.36103/ijas.v48i4.360. Disponível em: https://jcoagri.uobaghdad.edu.iq/index.php/intro/article/view/360.. Acesso em: 5 may. 2024.