1 Subjects: “...Operating systems (Computers) / http://id.loc.gov/authorities/subjects/sh85094982...”

2 Subjects: “...Operating systems (Computers) / blmlsh...”

3 Subjects: “...Operating systems (Computers) / blmlsh...”

4 Subjects: “...Operating systems (Computers) / http://id.loc.gov/authorities/subjects/sh85094982...”

5 Subjects: “...Operating systems (Computers) / blmlsh...”

6 Subjects: “...Computer operating systems / sears...”

7 Subjects: “...Operating systems (Computers) / http://id.loc.gov/authorities/subjects/sh85094982...”

8 Subjects: “...Operating systems (Computers) / http://id.loc.gov/authorities/subjects/sh85094982...”