| Subject | English | Spanish |
| environ. | air-quality program | programa de control de la calidad del aire |
| tech. | quality program-4 stands for people, process, performance and product | QP-4 (programa de calidad que abarca los 4 elementos: personal, procedimientos, ejecución y producto) |
| tech. | quality program 4, stands for people, process, performance and product | QP-4 |