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1.	Image from Google Jackets Image from OpenLibrary	Telecommunication System by "Freeman,Roger,L." Material type: Text Publication details: New York ; John Wiley ; 1980 Availability: Items available for loan: IET Lucknow Central Library (4).
2.	Image from Google Jackets Image from OpenLibrary	Reference Manual For Tel by Freeman Roger L Edition: Second Material type: Text Publication details: New York ; John-Wiley ; 1984 Availability: Items available for loan: IET Lucknow Central Library (2).
3.	Image from Google Jackets Image from OpenLibrary	Practical Data Communica by "Freeman, Roger .L" Material type: Text; Format: print ; Literary form: Not fiction Publication details: New York ; John- Wiley ; 1995 Availability: Items available for loan: IET Lucknow Central Library (1).
4.	Image from Google Jackets Image from OpenLibrary	Practical Data Communica by "Freeman, Roger .L" Material type: Text; Format: print ; Literary form: Not fiction Publication details: New York ; John- Wiley ; 1995 Availability: Items available for loan: IET Lucknow Central Library (1).
5.	Image from Amazon.com Image from Google Jackets Image from OpenLibrary	TELECOMMUNICATION SYSTEM ENGINEERING by "FREEMAN, ROGER L..." Edition: 4 Publication details: WILEY INDIA Availability: Items available for loan:* IET Lucknow Central Library (2)Call number: 621.382 FRE, ...

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