Genre
Sources
20
Congresses
15
Periodicals
12
Anti-abolition literature
4
Case studies
3
Academic theses
2
Biography
2
Electronic books
2
History
2
Literary collections
2
Statistics
2
Cross-cultural studies
1
Handbooks, manuals, etc
1
Music
1
Platforms
1
Portraits
1
Terms and phrases
1
Textbooks
1
Thèses et écrits académiques
1
Translations into English
1
Yearbooks
1