Editor E. The peripheral ring construction project: OPAMSS. Importance, proposed layout, negative impacts and possible alternatives to the peripheral ring construction project, February 2002. eca [Internet]. 2002 Apr. 30 [cited 2024 Jun. 30];57(641-642):335-41. Available from: https://revistas.uca.edu.sv/index.php/eca/article/view/5641