1 Subjects: “...::DSA Literary theory...”

2 Subjects: “...play theory...”

3 Subjects: “...axiomatic design theory (ADT)...”

4 Subjects: “...symmetric 2D + T theory...”

5 Subjects: “...theory of planned behavior...”

6 Subjects: “...decision theory...”

7 Subjects: “...theories of retirement...”

8 Subjects: “...information gap decision theory (IGDT)...”

9 Subjects: “...network flow theory...”

10 Subjects: “...game theory...”

11 Subjects: “...grounded theory...”

12 Subjects: “...: epistemology and theory of knowledge...”

13 Subjects: “...grounded theory...”

14 Subjects: “...game theory...”

15 Subjects: “...fractal theory...”