2. DOS

Author:

Library: Tehran University, technical faculty libraries 1 (Tehran)

Subject: MS-Dos(Computer operating systems),Unix (Computer operating system)

Classification :
QA
76
.
76
.
O63S49

4. DOS/UNIX systems

Author:

Library: Library of Campus2 Colleges of Engineering of Tehran University (Tehran)

Subject: MS-DOS (Computer operating system),UNIX (Computer file)

Classification :
QA
76
.
76
.
O63S49
1986