• 1 Cooperative Children's Book Center (CCBC)

• 2 Videos, Slides, Films
• 1 Books
• 1 Sound Recordings

• 1 Compact Discs

• 1 Antiquities
• 1 Building
• 1 City planning
• 1 Civil engineering
• 1 Engineering
• 1 History
• 1 Inventions
• 1 Inventors
• 1 Knowledge
• 1 Leonardo, da Vinci, 1452-1519

• 1 Barretta, Gene
• 1 Einhorn, Richard, 1952 August 2-
• 1 Hubbard, Ray Andrew, 1924-1999
• 1 Klein, Larry
• 1 Kurtz and Friends (Firm)
• 1 Macaulay, David
• 1 Olshaker, Mark, 1951-
• 1 PBS Home Video
• 1 Unicorn Projects, Inc

• 2 English

• 1 Rome
• 1 Rome (Empire)
• 1 Rome (Italy)

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