1 Subjects: “...Sociology & Social History / hilcc...”

2 Subjects: “...; Personality characteristic; General compulsory school; History of schools; History; Higher education lecturing...”

3 Subjects: “...History / bicssc...”

4 Subjects: “...History of engineering and technology / bicssc...”

5 Subjects: “...History of engineering & technology / bicssc...”

6 Subjects: “...sewer history...”

7 Subjects: “...History / bicssc...”

8 Subjects: “...History of engineering and technology / bicssc...”

9 Subjects: “...History of engineering & technology / bicssc...”

10 Subjects: “...History of engineering & technology / bicssc...”

11 Subjects: “...History of engineering & technology / bicssc...”

12 Subjects: “...History of engineering and technology / bicssc...”

13 Subjects: “...History of engineering & technology / bicssc...”

14 Subjects: “...History of engineering & technology / bicssc...”

15 Subjects: “...History of engineering and technology / bicssc...”

16 Subjects: “...History of engineering and technology / bicssc...”

17 Subjects: “...History of engineering and technology / bicssc...”

18 Subjects: “...History of engineering and technology / bicssc...”

19 Subjects: “...History of engineering and technology / bicssc...”

20 Subjects: “...History of engineering and technology / bicssc...”