ANATOMY OF A XENOMORPH - Studying What Scientists Cannot

This book is about a mission where astronauts land upon a mysterious planet. But during an expedition. The crew find out they're not alone. After returning to the ship the crew feel tired, Nausea except one. And then well, you know what happens next...

But this story is not Ripley's it's another man in another universe and his struggle to survive. He documents and learns the bodily functions of a xenomorph all the way and how to fight them.