Subject
Science
Encyclopedias
82
Technology
65
Juvenile literature
60
Pictorial work
39
Periodicals
25
Dictionaries, Juvenile
22
Encyclopedias Juvenile
20
Engineering
9
Study and teaching
9
Philosophy
8
Problems, exercises, etc
8
Chemistry
6
Juvenile Literature
6
Science:
6
Data processing
5
Dictionaries
5
English language
5
Physics
5
Textbooks
5
Experiments
4
Mathematics
4
Medicine
4
Miscellanea
4
Science fiction
4
Ethics
3
Natural history
3
Research
3
Science teachers
3
Social aspects
3
Study and teaching (Secondary)
3
Technical English
3
Comic books, strips, etc
2
Computer simulation
2
Education, Higher
2
Forecasting
2
Gravity
2
History
2
Islam and science
2
Malay
2
Mechanics
2
Physical sciences
2
Readers
2
Religion
2
Science and civilization
2
Science projects
2
Terminology
2
Thought and thinking
2
Training of
2
miscellanea
2
more ...