Subject
Documentary films
History
17
Production and direction
11
Feature films
8
Voyages and travels
6
Sustainable architecture
4
Buildings
3
Motion pictures
3
Organic farming
3
Restoration monitoring (Ecology)
3
Silent films
3
Social aspects
3
Social conditions
3
Social life and customs
3
Agriculture
2
Animals
2
Architecture
2
Auschwitz (Concentration camp)
2
Cancer
2
Dance
2
Elections
2
Emigration and immigration
2
Immigrants
2
Painting
2
Patients
2
Protest movements
2
Renewable energy sources
2
Sand and gravel mines and mining
2
Short films
2
Spies
2
Sustainable living
2
World War, 1939-1945
2
Actors, Black
1
Adnyamathanha (Australian people)
1
Adnyamathanha language
1
Adopted children
1
African American actresses
1
African American children
1
Airships
1
Animal activists
1
Animal rights activists
1
Animal sanctuaries
1
Animated films
1
Antisemitism
1
Architecture, Domestic
1
Armed Forces
1
Art
1
Artists
1
Atheism
1
Authors, American
1
more ...