Acclaimed photojournalist Prashant Panjiar's latest photobook 'That Which Is Unseen' was launched on September 18. Published by Ahmedabad-based Navajivan Trust, this book is a collection of photographs and backstories from Panjiar's almost four decades of photography career. Navajivan Trust, founded by Mahatma Gandhi, is a publishing house with a good reputation and has published more than 800 titles in English, Hindi, Gujarati and other languages.