The white oryx

"Look there!" Mandy says. "I can see tracks." "You're right," Abdullah says. "There are the tracks of a track, and some oryx. And look! There's some blood in the sand here - and there." 

Mandy Brown is in the desert with Abdullah, an oryx ranger. But there are poachers in the desert too - and a mother oryx is dead. Can Mandy and Abdullah catch the poachers? And can they find the dead oryx's baby?

In this book, there were a few difficulty words foe me. But I could understand what happened in this whole story. I want to try to read this story again.