| #271 | The American journal of science. -- New Haven : J.D. & E.S. Dana, 1880-. -- ISSN 0002-9599 print. -- ISSN 1945-452X online |
| #272 | The American journal of science and arts. -- New-Haven : S. Converse, 1820-1879. -- ISSN 0099-5363 |
| #273 | American libraries. -- Chicago : American Library Association, 1970-. -- ISSN 0002-9769 |
| #274 | American machinist. -- Cleveland : Penton, 1988-. -- ISSN 1041-7958 |
| #275 | American machinist. -- UNITED STATES : [New York] McGraw-Hill., 1877-1960. -- ISSN 0360-5892 |
| #276 | American machinist. -- UNITED STATES : [New York, NY : McGraw-Hill, c1968-c1985., 1968-1985. -- ISSN 0002-9858 |
| #277 | American machinist and automated manufacturing. -- UNITED STATES : [New York, NY] : McGraw-Hill, [c1986]-1988., 1986-1988. -- ISSN 0886-0335 |
| #278 | American machinist, metalworking manufacturing. -- UNITED STATES : New York, McGraw-Hill., 1960-1968. -- ISSN 0096-5154 |
| #279 | The American mathematical monthly. -- Washington : Mathematical association of America, 1894-. -- ISSN 0002-9890 print. -- ISSN 1930-0972 online |
| #280 | American milk review. -- UNITED STATES : New York : Urner-Barry Co., 1939-1958., 1939-1958. -- ISSN 0096-0934 |