An Introduction to Population Genetics Theory
, authored by James F. Crow and Motoo Kimura and originally published in 1970, is widely considered the foundational "bible" of modern theoretical population genetics. Amazon.com Core Overview and Significance
Search for keywords: "population genetics theory pdf", "introductory population genetics notes pdf", "Hardy Weinberg pdf", "coalescent theory primer pdf". Use university course pages and review articles for reliable PDFs (lecture notes often freely available).
Weir, B. S. (2008). Population genetics: theory and applications. Sinauer Associates.