Guru nanak dev ji book July 8, 2019 16 32 64 128 Guru nanak dev ji book for kids Guru nanak dev ji book pdf Guru nanak dev ji sakhi book Guru nanak dev ji history book Guru nanak dev ji story book Guru nanak dev ji udasiyan book Guru nanak dev ji teachings book Guru nanak dev ji life book Guru nanak dev ji ki book