The following issues are available. I will pay postage ECOS no 7 1976 - no 94 1998 Missing: nos 8, 10, 18, 37, 47, 49, 58, 62, 64, 69, 72, Patricia Hughes Librarian Environment protection Authority PO Box 1135 CHATSWOOD NSW 2057 Email: hughesp@epa.nsw.gov.au Phone: 02-93255585 Fax: 02-93255536