Genre
Electronic books
12
Bibliography
5
Observations
5
Government publications
4
Congresses
3
Juvenile literature
3
Internet resource
2
Juvenile works
2
Nonfiction films
2
Periodicals
2
Bibliographie
1
Bibliographies
1
Conference papers and proceedings
1
Congrès
1
Documentaires
1
Documentaries and Factual Films
1
Documentary films
1
Educational films
1
Environmental films
1
Feature films
1
Films autres que de fiction
1
Films environnementaux
1
Kongreß
1
Ouvrages pour la jeunesse
1
Video recordings
1
bibliographies
1