Amazon has a suggestion
I looked at the amazon page for my own book, and got the following email:
=========
Based on your recent visit, we thought you might be interested in these items.
Linux Application Development
Michael K. Johnson, Erik W. Troan
https://www.amazon.com/gp/product/0201308215/ref=pe_375520_379591630_em_1p_0_ti
List Price: $47.95
Price: $43.80
You Save: $4.15(9%)