| #991 | Endocrine-related cancer. -- Bristol : Society for Endocrinology, 1994-. -- ISSN 1351-0088 print. -- ISSN 1479-6821 online |
| #992 | Endocrine reviews. -- Bethesda : Endocrine Society, 1980-. -- ISSN 0163-769X print. -- ISSN 1945-7189 online |
| #993 | Endocrinologia experimentalis. -- Bratislava : Veda, 1964-1990. -- ISSN 0013-7200 |
| #994 | Endocrinology. -- Bethesda : Endocrine Society, 1917-. -- ISSN 0013-7227 print. -- ISSN 1945-7170 online |
| #995 | Endocrinology and metabolism clinics of North America. -- Orlando : W.B. Saunders, 1987-. -- ISSN 0889-8529 |
| #996 | Endocrinology index. -- Bethesda : National Institute of Arthritis Metabolism and Digestive Dis, 1968-1979. -- ISSN 0013-7235 |
| #997 | Endokrinologie. -- Leipzig : Johann Ambrosius Barth, 1928-1982. -- ISSN 0013-7251 |
| #998 | Endokrynologia polska. -- Warszawa : Zarząd Główny Polskiego Towarzystwa Endokrynologicznego, 1950-. -- ISSN 0423-104X |
| #999 | Endoscopic surgery and allied technologies. -- Stuttgart : Georg Thieme, 1993-1995. -- ISSN 0942-6027 |
| #1000 | Endoscopy. -- Stuttgart : Thieme, 1969-. -- ISSN 0013-726X print. -- ISSN 1438-8812 online |