African Star Over Asia: The Black Presence in the East
by Runoko Rashidi

From the back cover:

What is the origin of the many Black populations in Asia? What are their links to Africa in prehistoric times? And in recent times? Has history been distorted by other dominant populations?

This is an immense subject which Runoko Rashidi investigates diligently. He pays tribute to a number of earlier scholars and includes selected texts from their work. This book is well written and comprehensive with many very interesting illustrations.