SUBJECT
History
Electronic books
600
Social aspects
50
Missions
49
Discoveries and explorations
47
History and criticism
41
Philosophy
39
Politics and government
36
Social conditions
26
Political aspects
22
Theater
20
Civilization
17
Big business
16
Business enterprises
16
Corporations
16
Research
16
Science
16
Technological innovations
16
Technology
16
Philippines
15
Description and travel
14
Music
14
Mathematics
13
Chemistry
12
Computer science
11
Economic conditions
11
Economics
11
Relations
11
Engineering
10
Environmentalism
10
Antiquities
9
Architecture
9
Mass media
9
Study and teaching
9
Women
9
Colonization
8
Criticism and interpretation
8
Management
8
Political science
8
Social life and customs
8
Art
7
Economic policy
7
Education
7
Filipinos
7
Moral and ethical aspects
7
Religion
7
Astronautics
6
Earthquakes
6
Electronic book
6
Fiction
6
more ...