Numerical Methods - Introduction To Numerical Analysis (D.C. Sanyal and K. Das) Mathematics 3- Engineering Mathematics Volume-Iii (B.K. Pal and K. Das) Circuit Theory & Networks - CIRCUIT THEORY AND NETWORKS (WBUT SERIES) (A. Chakraborty, S Ghosh) Solid State Devices - SOLID STATE ELECTRONICS DEVICES (WBUT) (Jyoti Prasad Bandyopadhyay) Signals & Systems - S.Haykin & B.V.Veen, Signals and Systems- John Wiley Analog Electronic Circuit - Gayakwad R.A -- OpAmps and Linear IC’s, PHI