Inventions
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- Readers + Inventions
- Inventions + Study and teaching
- Inventions + Design and construction
- Inventions + History + Study and teaching (Elementary)
- Inventions + Marketing
- Inventions + Moral and ethical aspects
- Inventions + Miscellanea
- Inventions + History
- Inventions + Chronologie
- Inventions + Histoire
- Inventions + Defects + History
- Inventions + Social aspects
- Inventions + Environmental aspects
- Inventions + Miscellanées
- Inventions + Economic aspects + History
- Inventions + Chronology
- Focus of26
- Inventions -- New Jersey -- History
- Inventions -- United States -- Encyclopedias
- Inventions -- Children's nonfiction
- Inventions -- China -- History -- To 1500 -- Juvenile literature
- Inventions -- France -- History -- 19th century -- Juvenile literature
- Inventions -- United States -- Popular works
- Inventions -- United States -- Juvenile films
- Inventions -- Italy -- History -- 16th century
- Inventions -- Boston Metropolitan Area -- History
- Inventions -- Humor
- Inventions -- France -- History -- 18th century -- Juvenile literature
- Inventions -- Italy -- History -- 15th century
- Inventions -- Australia -- History
- Inventions -- Handbooks, manuals, etc
- Inventions -- United States -- History -- Juvenile literature
- Inventions -- China -- History -- Juvenile literature
- Inventions -- United States -- Marketing
- Inventions -- Comic books, strips, etc
- Inventions -- United States -- History -- 20th century
- Inventions -- Africa
- Inventions -- Pictorial works -- Juvenile literature
- Inventions -- Maine -- History
- Inventions -- Maritime Provinces -- History
- Inventions -- Greece -- History -- Juvenile literature
- Inventions -- United States -- Juvenile literature
- Inventions -- Juvenile films
- Inventions -- Greece -- History
- Inventions -- United States -- History -- 19th century -- Juvenile literature
- Inventions -- Popular works
- Inventions -- Africa -- Juvenile literature
- Inventions -- Egypt -- History -- To 1500 -- Juvenile literature
- Inventions -- Drama
- Inventions -- South America -- Juvenile literature
- Inventions -- Juvenile literature
- Inventions -- Bandes dessinées -- Romans, nouvelles, etc. pour la jeunesse
- Inventions
- Inventions -- Kenya -- Juvenile literature
- Inventions -- Fiction -- Juvenile films
- Inventions -- Miscellanea
- Inventions -- Canada -- History -- Juvenile literature
- Inventions -- Fiction
- Inventions -- Fiction -- Juvenile sound recordings
- Inventions -- Canada -- History
- Inventions -- Antarctica -- Juvenile literature
- Inventions -- United States -- History -- Juvenile literature
- Inventions -- Miscellanea -- Juvenile literature
- Inventions -- Comic books, strips, etc -- Juvenile fiction
- Inventions -- North America -- Juvenile literature
- Inventions -- Canada -- Humor
- Inventions -- Australia -- Juvenile literature
- Sub focus of15
- Inventions + Miscellanea -- Juvenile literature
- Inventions + History -- Miscellanea -- Juvenile literature
- Inventions + History -- Problems, exercises, etc -- Juvenile literature
- Inventions + Marketing
- Inventions + Marketing -- Handbooks, manuals, etc
- Inventions + Design and construction -- Juvenile literature
- Inventions + History -- China
- Inventions + Marketing -- Juvenile literature
- Readers + Inventions
- Inventions + Moral and ethical aspects
- Inventions + History -- Popular works
- Inventions + Marketing -- Fiction
- Inventions + Study and teaching
- Inventions + History + Study and teaching (Elementary)
- Inventions + History -- Encyclopedias
- Inventions + History -- 20th century
- Inventions + History -- Juvenile fiction
- Inventions + History -- 19th century -- Juvenile literature
- Inventions + Histoire -- Ouvrages pour la jeunesse
- Inventions + Miscellanées
- Inventions + Miscellanea
- Inventions + History -- Juvenile literature
- Inventions + Chronology
- Inventions + Histoire -- 19e siècle -- Discours, essais, conférences
- Inventions + History -- 19th century
- Inventions + Defects + History
- Inventions + Social aspects -- Juvenile literature
- Inventions + Environmental aspects -- Juvenile literature
- Inventions + Social aspects -- Fiction
- Inventions + Chronologie
- Inventions + Social aspects
- Inventions + Economic aspects + History
- Inventions + History