| #421 | Ecology and future : Bulgarian journal of ecology science. -- Sofia : Association Ecological Alliance,, 2002-. -- ISSN 1312-076X |
| #422 | Ecology law quarterly. -- Berkeley : Boalt Hall School of Law, 1971-. -- ISSN 0046-1121 |
| #423 | Economic botany. -- New York : New York Botanical Garden, 1947-. -- ISSN 0013-0001 print. -- ISSN 1874-9364 online |
| #424 | Economic planning in free societies. -- Mount Royal : Academic Publishing, 1991-2000. -- ISSN 1191-3576 |
| #425 | Économie rurale. -- Paris : Société francaise ď économie rurale, 1953-. -- ISSN 0013-0559 print. -- ISSN 2105-2581 online |
| #426 | Ecotoxicology and environmental safety. -- San Diego : Academic Press, 1977-. -- ISSN 0147-6513 print. -- ISSN 1090-2414 online |
| #427 | Egg industry : Watt poultry publication covering egg production, processing and marketing. -- Mount Morris (Illinois) : Watt Publishing, 1987-. -- ISSN 0896-2804 |
| #428 | Ehime Daigaku Nogakubu Kiyo. -- Matsuyama : Ehime Daigaku Nogakubu, 1955-. -- ISSN 0424-6829 |
| #429 | Echo. -- Praha : Technologické centrum AV ČR, 2004-. -- ISSN 1214-7982 print. -- ISSN 1214-8229 online |
| #430 | EIA - IPPC - SEA. -- Praha : Ministerstvo životního prostředí : Centrum EIA, 2004-. -- ISSN 1801-6901 |