Genre
Textbooks
158
Electronic books
18
Periodicals
17
Statistics
7
Sources
5
Maps
4
Handbooks, manuals, etc
3
Caricatures and cartoons
2
Périodiques
2
Abstracts
1
Congresses
1
Electronic journals
1
Examinations, questions, etc
1
Juvenile literature
1
Outlines, syllabi, etc
1
Problems, exercises, etc
1
Statistiques
1