Genre
Electronic books
374
Study guides
126
Congresses
15
Handbooks, manuals, etc
7
Dictionaries
5
Software
4
Examinations, questions, etc
3
Case studies
2
Juvenile literature
2
Bibliography
1
Conference papers and proceedings
1
Electronic book
1
Miscellanea
1
Periodicals
1
Popular works
1
Problems, exercises, etc
1
Security measures
1
Web sites
1
congresses
1