The document provides a book review of "Poor Little Rich Slum" which discusses the large slum of Dharavi in Mumbai, India. It summarizes that Dharavi is one of the largest slums in the world, home to over 1 million people living in 175 hectares, and has an estimated annual turnover of 3000 crore rupees from the numerous small industries operating there including pottery, garment production, waste recycling, leather tanning and goods, and plastic recycling. Despite the lack of privacy, hygiene and infrastructure, Dharavi has a never-give-up entrepreneurial spirit and positive atmosphere as residents live, work, marry and die within the slum.