TY  - BOOK
T1  - IBM using disk operating system version 4.00.
LA  - English
PP  - Quezon City
PB  - Perfect Bound
YR  - 1988
UL  - https://tuklas.up.edu.ph/Record/UP-99796217601985670
OP  - 320
NO  - "Reprinted under the authority of Presidential Decree No. 285 as amended by P.D. Nos. 400 & 1203."
CN  - QA 76.8 I2594 I35 1988
KW  - IBM Personal Computer : Programming.
ER  -