Είδος
Tables
8
Textbooks
7
Periodicals
5
Case studies
3
Early works to 1800
3
Electronic books
3
Sources
3
Statistics
3
Bibliography
2
Cases
2
Biography
1
Claims
1
Controversial literature
1
High interest-low vocabulary books
1
Juvenile fiction
1
Juvenile literature
1
Juvenile works
1
Newspapers
1
Sermons
1