Digital library
Textbooks, references and open learning resources.

External
MATH 25: PreCalculus (Abramson OpenStax)
Jennifer Moorhouse · Hartnell College
In the contents: 5.04: Partial Fractions

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A Short Handbook for Writing Essays in the Humanities and Social Sciences
Allosso & Allosso · LibreTexts
In the contents: 1.01: Getting Started Writing

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Psyc 350: Behavioral Statistics
Loren Toussaint · Luther College
In the contents: 2.08: Bar Charts · 10.03: Partitioning Sums of Squares · 14.16: Shaking and Stirring Martinis

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Political Philosophy Reader
Noah Levin · Golden West College
In the contents: 2.02: Manifesto of the Communist Party (Karl Marx and Friedrich Engels) · 2.06: Considerations on Representative Government (John Stuart Mill) · 3.03: Of the Social Contract Part 1 (Jean-Jacques Rousseau)

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Archaeology: It's More Than Digging In The Dirt
Crystal Scheib · HACC, Central Pennsylvania's Community College
In the contents: 05: Artifact Preservation · 08: Dating Methods and Artifact Analysis · 8.02: Artifact Analysis

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CPSI10003 Microcomputer Applications I
LueCrecy Ragan & Michael Hostetler · Arkansas State University-Beebe
In the contents: 4.1.09: Graphics WordArt and SmartArt · 6.1.01: Artificial Intelligence and Microsoft Word · 8.1.02: Inserting Images Shapes and SmartArt

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Psych 172: Developmental Psychology
Neil Walker Fredrick Bobola · College of the Canyons
In the contents: 8.09: Partners as a source of intimacy - Dating, Cohabitation, and Mate Selection (Ob9)

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BIOL 310: General Biology
Eric Wada · Folsom Lake College
In the contents: 8.01: Organizing Life on Earth · 16.04: Mammalian Heart and Blood Vessels

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Stellar Atmospheres
Jeremy Tatum · University of Victoria
In the contents: 8.05: Some Comments on Partition Functions

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Medical Terminology 2e
OpenRN · Chippewa Valley Technical College
In the contents: 01: Foundational Concepts - Identifying Word Parts · 1.01: Introduction to Identifying Word Parts · 1.06: Foundational Concepts - Identifying Word Parts Learning Activities

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Introduction to Genetics
Natasha Ramroop Singh · Thompson Rivers University
In the contents: 4.02: Symbols used in Pedigree Charts · 4.05: Calculating Probabilities Using Pedigree Charts · 9.05: Unlinked Genes vs. Partial Linkage vs. Complete Linkage

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An Introduction to Computer Networks
Peter Lars Dordal · Loyola University of Chicago
This text is a free and open general-purpose computer-networking textbook, complete with diagrams and exercises.It covers the LAN, internetworking and transport layers, focusing primarily on TCP/IP. Particular attention is paid to congestion; other special topics include queuing, real-time traffic, network management, security and the ns simulator.

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Quantum Chemistry
Pacific Union College
In the contents: 03: The Schrodinger Equation and a Particle in a Box · 3.05: The Energy of a Particle in a Box is Quantized · 3.07: The Average Momentum of a Particle in a Box is Zero

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California Criminal Law 2026
Mark C Fields · El Camino College
In the contents: 06: Parties to Crime · 7.2.03: Conspiracy Parties · 7.2.05: Whartons Rule

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Complex Molecular Synthesis
Robert G. Salomon · Case Western Reserve University
In the contents: 02: Sugars - Biosynthetic Starting Materials · 2.03: Acetyl CoA- a Sugar-Derived Starting Material

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Human Biology
Suzanne Wakim & Mandeep Grewal · Butte College
In the contents: 17.3: Heart

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Fundamentals of Geology
Kimberly Schulte · Columbia Basin College
In the contents: 2.08: Abundance of Elements in Earth's Crust · 06: Earth's Interior · 6.03: Inside the Earth

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PLSC 261: Introduction to Political Theory
Vicki Hsueh and Shirin Deylami · Western Washington University
In the contents: 1.03: Aristotle The Politics Book 3 (Part I-XI) · 1.05: John Stuart Mill Selections from Considerations on Representative Government 1861 · 1.11: John Stuart Mill Excerpts from On Liberty 1859

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Anatomy and Physiology 2e
OpenStax · LibreTexts
In the contents: 9.04: Cartilaginous Joints · 19: The Cardiovascular System - The Heart · 19.02: Heart Anatomy

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Introduction to Legal Studies and Legal Ethics
Beth R. Pless, J.D. and Anne E. Oestreicher, J.D. · Northeast Wisconsin Technical College
In the contents: 7.02: Primary Court Participants