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- 18.06 Anglo-American literature. bcl1
- Adolescents (13-19)1
- Agriculture1
- Agriculture Andes Region Periodicals1
- Agriculture Peru Periodicals1
- Airplanes1
- Airplanes Juvenile literature1
- Amerikaans. gtt1
- Anthologie. swd1
- Appropriate technology3
- Appropriate technology Developing countries Periodicals2
- Appropriate technology Periodicals1
- Archaeologists1
- Aufsatzsammlung gnd1
- Automobiles1
- Automobiles Juvenile literature1
- Boys' stories1
- Buildings - skyscrapers1
- Chemistry1
- Chemistry Juvenile literature1