TY  - BOOK
TI  - Microsoft MS-DOS step by step, revised for version 6.3 
SN  - 9781556156359
AV  - QA 76.76 .M626 1994
U1  - CS 005.4469  
PY  - 1994///
CY  - Redmond, Washington
PB  - Microsoft Press
N1  - Includes Index
N2  - 1. MS-DOS (Computer file)
ER  -