The ideology of the Nine Planetary deities (The Nava-Grahas) is an important one in our country. All the rituals, dairy and occansional, involve the propitiation of these Grahas. The volumes includes all the available texts relating to the worship of the planetary deities. Mainly it includes texts of Navagraha Puja Vidhi and Graha Yoga Paddhati, excepts from popular texts like Mantra Mahodadhi and from rare texts like Vaikhanasa-agama Khiladhikara and Bhrigu Samhita relating to the worship of the Nava-Graha especially of Surya.