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Humor (Nonfiction) 47

Women's Studies 45

Essays 40

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Science 33

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Family & Relationships 29

Reference 26

Young Adult Nonfiction 23

Multi-Cultural 21

Medical 20

Literary Criticism 19

Media Studies 18

Psychology 18

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Technology 16

Nature 13

African American Nonfiction 12

Education 12

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Language Arts 9

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Christian Nonfiction 7

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LGBTQIA+ (Nonfiction) 4

Gender Studies 4

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Mathematics 3

Art 3

Engineering 2

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Management 1

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Careers 1

Physics 1

Current Events 1

Analysis 1

Ethics 1

Fiction 1

Home Design & Décor 1

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Literary Anthologies 1

Music 1

New Age 1

Transportation 1