EPA emergency planning and community right to know, 1987 toxic release inventory: National set: (CD-ROM Edition). Washington, DC: Environmental Protection Agency, Office of Toxic Substances, 1990. One CD-ROM (Compact Disk, Read-only Memory), one floppy diskette (contains the necessary software to initialize and retrieve data on the CD), one paper manual. SuDoc: EP 1.22:T 65. S/N 055-000-00356-4. $23.00