HADRON Dark Matter Kindle Edition ($0.00)
https://www.amazon.com/s/ref=sr_pg_3?rh=n%3A133140011%2Cn%3A%21133141011%2Cn%3A154606011%2Cn%3A668010011%2Cn%3A158591011%2Cn%3A6361471011%2Cp_20%3AEnglish%2Cp_36%3A0-0&page=3&sort=price-asc-rank&ie=UTF8&qid=1490114258&lo=none
Altered Genes: Genesis Kindle Edition ($0.00)
https://www.amazon.com/Altered-Genes-Genesis-Mark-Kelly-ebook/dp/B01DDMGO6K/ref=sr_1_42?s=digital-text&ie=UTF8&qid=1490114809&sr=1-42&refinements=p_20%3AEnglish%2Cp_36%3A0-0