You're looking for information on VNR (likely VNR Vignana Jyothi) syllabus books. VNR Vignana Jyothi is a well-known educational institution in Hyderabad, India.
Signals and Systems by Alan V. Oppenheim. Mechanical & Automobile Engineering vnr syllabus books
To provide a helpful response, I'll need more context or clarification on what you're looking for: You're looking for information on VNR (likely VNR