The Indian Knowledge System (IKS) represents one of the world’s most ancient and comprehensive traditions of intellectual inquiry deeply rooted in the cultural, spiritual, and philosophical heritage of India. “ Indian Knowledge System ” represents one of the most comprehensive and sophisticated intellectual traditions of the world, encompassing philosophy, science, medicine, mathematics, arts and governance that has evolved over millennia. INDIAN civilization has always attached great value to knowledge — witness its amazingly large body of intellectual texts, the world's largest collection of manuscripts, its attested tradition of texts, thinkers and schools in so many domains of knowledge . Find all 84 books written by Agatha Christie, all arranged in the order they were published. Discover the full collection in sequence.