MAP20071018407 Rosenfield, Harry N. Safety and the four D's / Harry N. Rosenfield Sumario: After a year of deregulation, defederalization, and defunding in Washington, the private sector and the voluntary safety movement must face a fourth "D", defense of safety En: National safety news. - Chicago. - Vol. 126, nº 6, December 1982 ; p. 30-31 1. Seguridad . 2. Política de seguridad . 3. Programas de seguridad . 4. Legislación . 5. Información . 6. Organismos de normalización . 7. Estados Unidos . I. Title. II. Título: National safety news.