Here are the links to a few invaluable books:
[1] VLSI: CMOS Circuit Design Layout and Simulation - R. Jacob Baker
[1] VLSI: CMOS Circuit Design Layout and Simulation - R. Jacob Baker
Mediafire Link: http://www.mediafire.com/?4i7419aeqofgeva
[2] Engineering Mathematics: Advanced Engineering Mathematics - Erwin Kreyszig
[3] Microprocessor: Understanding 8085 8086 Microprocessors - S. K. Sen