Essentials of Organizational Behavior by Robbins, Stephen P.,Judge, Timothy A.,

IP Switching and Routing Essentials by Stephen A. Thomas

Essentials of Geology - Paperback, by Marshak Stephen - Good

Essentials of Geology - Paperback, by Marshak Stephen - Very Good

SSL & TLS Essentials: Securing the Web by Stephen A. Thomas

IP Switching and Routing Essentials: Understanding RIP, OSP

SSL & TLS Essentials: Securing - Paperback, by Thomas Stephen A. - Acceptable