NEED TO LEARN ABOUT C MOS FABRICATION,C MOS INVERTOR,N MOS INVERTOR,GATES USING IN C MOS & N MOS

I am part time BE student.Need to learn about VLSI design.Kindly support for freedown load VLSI design book

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Thanks for your cooperation.I want to know about C MOS technology,C MOS inverter,N MOS inverter,Inverters Using gates