Bollywood actor Salman Khan launched photographer Bina Kak's book "Silent Sentinels Of Ranthambhore" here on Wednesday, terming it a "great book"."I think it is a great book because I have seen all the pictures much before they have released. All the pictures are really nice and beautiful," he said in a media interaction.Katrina Kaif, Salim Khan, Helen, Salman Khan, Baba Siddique, Priya Dutt and many more also attended the book launch.Salman also said that every time, his movie is nearing release, Kak comes out with a book."I don't understand whether we are here promoting 'Tiger Zinda Hai' or her book."It had happened earlier, I was doing 'Sultan' with Ali Abbas Zafar, we were planning on going to Ranthambhore, at that time Bina issued a book on a tiger named Sultan, but the plan didn't work out. Now 'Tiger Zinda Hai' is coming and her book is also releasing at the same time," he said.Salman also shared yet another funny story concerning Kak."Every time Bina Kak visits a jungle, my life turns into a mess. She sends me 50 photographs every day. So I am like this is good, incredible, I would send her long messages but, in time, it went from 'very nice' to 'nice' and then 'hmm' and eventually I would send her only 'K'," he added.Salman Khan will be next seen in "Tiger Zinda Hai" opposite Katrina. The film, helmed by Zafar, releases on December 22.