The development of this textbook is supported in part by the Wise Oklahoma State University Library Open Textbook Initiative and was begun during the author’s sabbatical at China Agricultural University hosted by Dr. Tusheng Ren. Jingnuo Dong has prepared answer keys for most of the problem sets in this book. Contact the author to request a copy.
Cover Image: Rain and shine near Chilcott, Somerset, UK. Photo by Edmund Shaw. Licensed for reuse CC BY-SA 2.0.
Date: January 13, 2019