PHP: PHP security and session management by Andy Vickler Paperback Book

PHP: Advanced PHP functions by Vickler, Andy [Paperback]

Linux: Linux for Beginners by Andy Vickler Paperback Book

R Programming: R Data Analysis and Statistics by Vickler, Andy [Paperback]

Linux: Linux Security and Administration by Andy Vickler Paperback Book

C++: C++ Common used Libraries by Vickler, Andy [Paperback]

Linux: Linux Command Lines and Shell Scripting by Vickler, Andy [Paperback]