| #51 | Archives of environmental health. -- Washington : Heldref Publications, 1960-2005. -- ISSN 0003-9896 |
| #52 | Archives of environmental & occupational health. -- Washington : Heldref Publications, 2005-. -- ISSN 1933-8244 print. -- ISSN 2154-4700 online |
| #53 | Archiwum Ochrony Środowiska. -- Wroclaw : Zakład Narodowy im. Ossolińskich, 1974-. -- ISSN 0324-8461 |
| #54 | Arid land research and management. -- New York : Taylor & Francis, 2001-. -- ISSN 1532-4982 print. -- ISSN 1532-4990 online |
| #55 | Arid soil research and rehabilitation. -- New York : Taylor & Francis, 1987-2000. -- ISSN 0890-3069 print. -- ISSN 1521-0405 online |
| #56 | Atmospheric environment, Part A, General topics. -- Oxford : Pergamon, 1990-1993. -- ISSN 0960-1686 print. -- ISSN 1878-2124 online |
| #57 | Atmospheric environment, Part B, Urban atmosphere. -- Oxford : Pergamon, 1990-1994. -- ISSN 0957-1272 print. -- ISSN 1878-2132 online |
| #58 | Atmospheric environment. -- Oxford : Pergamon Press, 1967-1989. -- ISSN 0004-6981 print. -- ISSN 1878-2442 online |
| #59 | Atmospheric environment. -- Oxford : Pergamon, 1994-. -- ISSN 1352-2310 print. -- ISSN 1873-2844 online |
| #60 | Atmospheric research. -- Amsterdam : Elsevier, 1986-. -- ISSN 0169-8095 print. -- ISSN 1873-2895 online |