Note: In order of Library of Congress Classification
(Q) Science (General)
- A First Course in Linear Algebra - Robert A. Beezer
- Advanced Algebra - Anthony W. Knapp (PDF)
- Advanced Calculus - Lynn H. Loomis and Shlomost Ernberg (PDF)
- An Introduction to Mathematical Reasoning - Peter J. Eccles (PDF)
- An Introduction to the Theory of Numbers - Leo Moser (PDF)
- Basic Algebra - Anthony W. Knapp (PDF)
- Basic Concepts of Mathematics - Elias Zakon (PDF)
- Basics of Algebra, Topology, and Differential Calculus (PDF)
- Book Of Proof (2013) - Richard Hammack
- Calculus - Gilbert Strang (PDF)
- Calculus Better Explained - Kalid Azad (online)
- Calculus Made Easy - Silvanus P. Thompson (PDF)
- College Geometry - Csaba Vincze and László Kozma (PDF)
- Computational Geometry
- Elementary Algebra (2011) - Francisco Javier Márquez
- Elementary Differential Equations - William F. Trench (PDF)
- Encyclopedia of Mathematics - Springe
- Graph Theory
- Introduction to Probability - Charles M. Grinstead and J. Laurie Snell
- Introduction to Probability and Statistics Spring 2014
- Introduction to Proofs - Jim Hefferon
- Introduction to Statistical Thought - Michael Lavine
- Lecture Notes of Linear Algebra - Dr. P. Shunmugaraj, IIT Kanpur (PDF)
- Linear Algebra - Dr. Arbind K Lal, IIT Kanpur (PDF)
- Linear Algebra (PDF)
- Linear Algebra by Jim Hefferon - Jim Hefferon
- Linear Algebra Notes - David A. Santos (PDF)
- Mathematical Logic - an Introduction (PDF)
- Mathematics For Computer Science (2017) - Eric Lehman et al. (PDF)
- Mathematics for Physics - Michael Stone and Paul Goldbart (PDF)
- Mathematics Formulary - J.C.A. Wevers (PDF)
- Modern Elementary Geometry - B. Grünbaum (PDF)
- Number Theory - Holden Lee MIT
- OpenIntro Statistics
- OpenStax - Mathematics - OpenStax (PDF)
- Ordinary Differential Equations - Wikibooks
- Probability and Statistics Cookbook
- Probability and Statistics EBook
- Stacks Project
- Statistics Done Wrong - Alex Reinhart
- The Handbook of Essential Mathematics - John C. Sparks (PDF)
- Trigonometry Lecture Notes And Exercises - D. Raies (PDF)
- Understanding Basic Calculus - S.K. Chung (PDF)
- A Short History of Astronomy (1898) - Arthur Berry (PDF)
- Archaeology, Anthropology, and Interstellar Communication (2014) - Douglas A. Vakoch
- Astronomy (1877) - Sir Robert Stawell Ball
- Astronomy (1915) - Harold Jacoby
- Astronomy (OpenStax) - Andrew Fraknoi et al. (PDF)
- Elements of astronomy (1836) - John Hubbard Wilkins
- Hubble 25: A Quarter-Century of Discovery with the Hubble Space Telescope (2015) - Dylan Steele
- A Text Book for High School Students Studying Physics - FHSST Authors (PDF)
- An introduction to Physics - Pervez Hoodbhoy (PDF)
- Classical Dynamics - David Tong (PDF)
- Classical Mechanics - Joel A. Shapiro (PDF)
- Dynamics and Relativity - David Tong (PDF)
- Fundamental Physics for Level 0 - Teaching Guide - Ian Collins (PDF)
- Fusion Physics - (PDF)
- GRE Physics Test Practice Book - (PDF)
- Introduction to General Relativity - Gerard ’t Hooft (PDF)
- Introductory Physics I - Elementary Mechanics - R.G. Brown (PDF)
- Motion Mountain Physics - Christoph Schiller
- Physics Before and After Einstein - Marco Mamone Capria (PDF)
- Physics Test Practice Book - (PDF)
- Problems in Introductory Physics - B. Crowell and B. Shotwell (PDF)
- Statistical Physics - David Tong (PDF)
- The Feynman Lectures on Physics - Richard P. Feynmann
- The Physics Hypertextbook
- University Physics, Volume 1 - William Moebs, Samuel J. Ling, Jeff Sanny et al. (PDF)
- University Physics, Volume 2 - William Moebs, Samuel J. Ling, Jeff Sanny et al. (PDF)
- University Physics, Volume 3 - William Moebs, Samuel J. Ling, Jeff Sanny et al. (PDF)
- A Dictionary of Chemistry (1777) - Pierre Joseph Macquer and James Keir
- Biochemistry from a phenomenological point of view - Christa van Tellingen (PDF)
- Biochemistry Practice Book - (PDF)
- CK-12 Chemistry - Second Edition (2011) - Sharon Bewick et al.
- From Vitamins to Baked Goods: Real Applications of Organic Chemistry (2012) - Kieran Gallagher and Lizhi Fan
- Introduction to Chemistry - Tracy Poulsen (PDF)
- An Introduction to Geology - Chris Johnson, Matt Affolter, Paul Inkenbrandt, Cam Mosher
- Physical Geology - Steven Earle (PDF)
- Beginners' Botany (1921) - L.H. Bailey (PDF)
(T) Technology
- Climate Change and the Oil Industry (2003) - Jon Birger Skjaerseth and Tora Skodvin
- Our Car as Power Plant (2014) - Ad van Wijk and Leendert Verhoef
- Sustainable Energy - without the hot air (2009) - David J. C. MacKay
- Understanding the Global Energy Crisis (2014) - Eugene D. Coyle and Richard A. Simmons
- (QH) Natural history
- (QL) Zoology
- (QM) Human anatomy
- (QP) Physiology
- (QR) Microbiology
- (R) Medicine (PDF)