It's an interesting read but hardly through. It mentions titbits of information before moving on to the next topic.
The cardinal sin of this book is that it doesn't provide any reference to the historical claims it makes.
But for all its flaws, its still perhaps on of the rare books that demonstrates the historical reality that Muslims and according to the author Islam, created science, philosophy, art, Muslim, economics and sociology centuries before the Renaissance. In fact, Renaissance in Europe is the direct result of Muslim documentation of philosophy, science, and maths.