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: This book provides instructions for worshipping 22 different devatas, including Ganapati, Subrahmanyan, and Durga , and can be found at the Universal Culture Trust Essential Daily Ritual Steps (Nitya Pooja)

A: No. Shastra says the knowledge is pure regardless of medium. However, the physical medium ( Dravya ) should be clean. A clean tablet kept strictly for Pooja reading is acceptable.