Importante! Sobre el catálogo
| LDR | ·····nam##22·····5##4500 |
| 001 | 000701 |
| 005 | 20100429110605.0 |
| 008 | 960000s1993####xx#####f#####|0||#0#eng#d |
| 040 | ## | $a AR-BaBIR $b spa |
| 245 | 00 | $a Concise user's guide : $b Microsoft MS-DOS 6. |
| 260 | ## | $a USA : $b Microsoft Corporation, $c 1993. |
| 300 | ## | $a 149 p. |
| 500 | ## | $a For the MS-DOS Operating System.. |
| 653 | ## | $a Sistemas operativos. |