SUBJECT
Technology
9
History
8
Science
7
Eighteenth century
3
Science -- History -- 18th century
3
Philosophy, Modern --18th century
2
Philosophy, Renaissance
2
Science -- History
2
Science and civilization--History--20th century
2
Science--History--20th century
2
Science--Social aspects--History--20th century
2
Technology -- History
2
Technology -- Social aspects
2
Technology --History --18th century
2
Technology and civilization--History--20th century
2
Technology--History--20th century
2
Technology--Social aspects--History--20th century
2
China
1
Civilization
1
Engineering
1
Engineering -- Research
1
Industrial arts --History
1
Inventions
1
Juvenile literature
1
Medicine
1
Philosophy --History
1
Philosophy, Modern
1
Philosophy, Modern -- 17th century
1
Philosophy, Modern -- 18th century
1
Physics -- History 0
1
Physics -- Research
1
Science -- History -- 16th century
1
Science -- History -- 17th century
1
Science -- Social aspects
1
Science --History
1
Science --History --20th century
1
Science --Social aspects --History --20th century
1
Science and civilization
1
Science and civilization --History --20th century
1
Science, Ancient
1
Science, Medieval
1
Science, Renaissance
1
Science--History--18th century
1
Technology -- History -- 16th century
1
Technology -- History -- 17th century
1
Technology -- History --18th century
1
Technology -- History 0
1
Technology --History --20th century
1
Technology --Social aspects --History --20th century
1
Technology and civilization --History --20th century
1
more ...