Business enterprises (2) puits (1) recherche (1) industrie pétrochimique (1) innovation (1) zone de développement (1) produit pétrochimique (1) Employment (1) Case (1) Forms (1) Narcissus (Plants) (1) Work (1) Stone (1) Research (1) Production (Economic theory) (1) Process (Law) (1) Petroleum chemicals industry (1) Partnership (1) Grammar, Comparative and general--Case (1) Functions (1) Corporations (1) Case (1) Buildings (1) Management (1) Research (1) Structure (1) Occupations (1) Narcisos (1) Empresas (1) Producción (1)