Digital library
Textbooks, references and open learning resources.
External
The Physical Environment
Michael E. Ritter · University of Wisconsin-Stevens Point
In the contents: 2.03: Natural Systems · 2.04: Looking Back - Natural Systems
External
Math 100: Liberal Arts Mathematics
Saburo Matsumoto · College of the Canyons
In the contents: 6.02: Logarithmic Scales in Natural Sciences
External
ANTH 205: Cultures of the World - Perspectives on Culture
Crystal Scheib · HACC, Central Pennsylvania's Community College
In the contents: 10.03: Elements of Religion - Cosmologies and the Supernatural
External
GEOG 11003 Introduction to Geography
Chester Cornell · Arkansas State University-Beebe
In the contents: 7.02: Natural Hazards in East and Southeast Asia · 12.05: Preservation of Natural Resources
External
Physical Chemistry for Biological Sciences
Carey Southern · DePaul University
In the contents: 12.05: Thermodynamic Functions have Natural Variables
External
Introduction to Economic Analysis
Anonymous · LibreTexts
In the contents: 15.06: Natural Monopoly
External
Introduction to Geography
Cameron McCormick · Spokane Falls Community College
In the contents: 2.01: Natural Resource Geography
External
Practical Meteorology
Roland Stull · University of British Columbia
In the contents: 21: Natural Climate Processes · 21.8: Natural Oscillations
External
Beliefs: An Open Invitation to the Anthropology of Magic, Witchcraft, and Religion
Amanda Zunner-Keating, Madlen Avetyan, and Ben Shepard · Los Angeles Valley College
In the contents: 1.09: Supernatural Beliefs about Health and the Role of Religious Specialists in Healing
External
Biological Anthropology
Tori Saneda & Michelle Field · Cascadia Community College
In the contents: 2.01: Classification - Ordering the Natural World
External
Nobody Wants a Boring Speech: Connect and Make It Matter
Joel Sakakihara, Russell Hong, and David A. Hamilton · De Anza College
In the contents: 9.04: Practice - From Prepared to Natural
External
Oceanography 101
Miracosta College · LibreTexts
In the contents: 14.03: Natural Factors Influencing Marine Life-
External
POLS125 Spring 2026
Connie Isais · Rio Hondo College
In the contents: 1.01: Chapter 11- Deism the Indigenous Critique Natural Rights and the Declaration of Independence
External
EXPLORATIONS: An Open Invitation to Biological Anthropology 2e
Beth Shook, Katie Nelson, Kelsie Aguilera, & Lara Braff, Eds. · LibreTexts
In the contents: 2.03: The Journey to Natural Selection · 2.05: Evolution and Natural Selection Observable Today
External
Physical Anthropology Anthro-1
Emma Blackthorne · Yuba College
In the contents: 3.5.01: Classification - Ordering the Natural World
External
Cultural Anthropology
Wikibook · LibreTexts
In the contents: 6.04: Concepts of Supernatural Beings
External
Integrated Math for Technical Fields
Allyn Leon · Imperial Valley College
In the contents: 5.07: How to Read Residential Electric and Natural Gas Meters · 13.02: Logarithmic Scales in Natural Sciences
External
Physical Geography and Natural Disasters
R. Adam Dastrup · Salt Lake Community College
In the contents: 1.05: Understanding Natural Disasters
External
Irrigation Systems Management (AET 021)
Dean E. Eisenhauer, Derrel L. Martin, Derek M. Heeren, Glenn J. Hoffman · University of Nebraska Lincoln
Our goal is for the reader to understand the complexities of irrigation systems and how they are to be managed to meet the water needs of the crop production system. This is not an irrigation engineering design book; we have purposely minimized the presentation of design steps and the supporting equations. The intended audience of the book is upper-level undergraduate students and graduate in agricultural or natural resource sciences.