text Espana ITSEMAP Ambiental 1994 monographic xiv, 578 p. ill.(some color) 22 cm. Fundacion MAPFRE. Includes Bibliographical References and Index. Pollution TD176.7 .M3 1994 333.714 M294 8471009579 EVLG 980424 20200221153400.0 216337 spa