Digital library
Textbooks, references and open learning resources.

External
Elementary Foundations: An Introduction to Topics in Discrete Mathematics
Jeremy Sylvestre · University of Alberta Augustana
In the contents: 9.05: Cartesian Product · 15.04: Articulation vertices bridges and edge connectivity · 18.03: Classes partitions and quotients

External
BIO-1110 Environmental Biology
Cyrus Sadeghian · Prince George's Community College
In the contents: 1.01: The Earth Humans and the Environment · 8.01: A Brief History of Life on Earth

External
International Relations
Stephen McGlinchey · E-International Relations
In the contents: 16.03: Chronic Hunger and the Civic Participant

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The American Journalism Handbook - Concepts, Issues, and Skills
Rodrigo Zamith · University of Massachusetts Amherst
In the contents: 3.06: Partisan and Geographic Biases · 4.03: Third-Party Platforms · 11.04: Artificial Intelligence and Automation

External
A Photographic Atlas for Botany
Maria Morrow · College of the Redwoods
In the contents: 13.01: Leaf Parts and Arrangement

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MATH 346 - Statistics (Kuter)
Kristin Kuter · Saint Mary's College
In the contents: Lab 1: Getting Started with R and EDA

External
Chem 110B: Physical Chemistry II
Delmar Larsen · University of California, Davis
In the contents: 17: Boltzmann Factor and Partition Functions · 17.5: Express the Pressure in Terms of a Partition Function · 17.6: Partition Functions of Systems of Distinguishable Molecules are Products of Molecular Partition Functions

External
Chem 1402:General Chemistry I
Robert Belford · University of Arkansas at Little Rock
In the contents: 6.4: Wave-Particle Duality

External
Introductory Chemistry, Atoms First for FCC
LibreTexts
In the contents: 2.4: Keeping Track of Subatomic Particles · 5.05: Conversions Between Mass and Number of Particles · 14.4.02: Radiocarbon Dating- Using Radioactivity to Measure the Age of Fossils and Other Artifacts

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The Psychology of Exceptional Children
Diana Zaleski · University of Illinois Springfield
In the contents: 13.02: The History of Head Start and At-Risk Programming

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UVM Environmental Science
Kyle Whittinghill · University of Vermont
In the contents: 04: Cycling of Matter in the Earth System · 7.02: Earth's Energy Balance

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Your Guide to Intermediate Algebra
Stanislav Trunov · Kansas State University
In the contents: 2.02: Graphing on the Cartesian Coordinate Plane

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Quantum States of Atoms and Molecules
Zielinksi et al. · Chemical Education Digital Library
In the contents: 4.03: The Particle-in-a-Box Model · 4.04: Spectroscopy of the Particle-in-a-Box Model · 4.06: Selection Rules for the Particle-in-a-Box

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Precalculus: Algebra and Trigonometry (Math 4 - FCC)
David Yang, Jeremy Brandl, Laurel Blackerby-Slater, Leila Nabi & Nate Allen · Fresno City College
In the contents: 7.03: Partial Fractions

External
Biology for Science Majors I
LibreTexts
In the contents: 19.02: Organizing Life on Earth

External
College Algebra (NWTC)
Northeast Wisconsin Technical College · College Algebra (NWTC)
In the contents: 7.05: Partial Fractions

External
CHEM 4110: Advanced Inorganic Chemistry
author · Catherine McCusker
In the contents: 2.1.02: Discovery of Subatomic Particles and the Bohr Atom · 11.4.02: Iron-sulfur Proteins and Models (Part 2) · 11.4.03: Iron-sulfur Proteins and Models (Part 3)

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Engaging Adults in Science and Energy
Pennsylvania State University · Pennsylvania State University
In the contents: 3.5.2.04: Questions to help people articulate interests and solutions · 4.03: From the Earth to a Grain of Sand · 4.3.01: The Structure of the Earth

External
CHM 320: Advanced Inorganic Chemistry textbook
LibreTexts
In the contents: 2.1.02: Discovery of Subatomic Particles and the Bohr Atom · 2.02: The Schrodinger equation particle in a box and atomic wavefunctions · 2.2.01: Particle in a Box

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Physical Chemistry
Patrick Fleming · California State University East Bay
In the contents: 7.02: Partial Molar Volume