In 2009 I had Interpretation: A Bible Commentary for Teaching and Preaching Psalms by James L. Mays. I know this because I was able to export a listing of my books in Libronix. I went looking for this book in Logos this week and it is not in my library. My first question is, "What happened to it?" I then have to wonder if other books have disappeared. If I owned it in 2009, shouldn't I still own it?