Era
20th century
164
19th century
51
Biography
51
1945-
31
20th century --
29
18th century
21
19th century --
13
1989-
9
21st century
9
1925-
8
17th century
7
1945-1989
7
Cases --
7
History
7
Islam
6
18th century --
5
1945
5
1990-
5
Early modern, 1500-1700
5
Malaysia
5
d.632
5
17th century --
4
1970-
4
1980-
4
1989
4
1989 -
4
2000-
4
Asia
4
Autobiography
4
Data processing
4
Early works to 1800
4
1500-1700
3
1914-1972
3
1956
3
1976-
3
1985-
3
China
3
Diagnosis
3
Handbooks,manuals etc
3
History --
3
Management
3
Methodology
3
Singapore
3
Social aspects
3
1631-1700
2
16th century --
2
1709-1784
2
1720-1788
2
1745-1746
2
1775-1783
2
more ...