TY  - BOOK
AU  - Gagliardi, Robert M.
TI  - Satellite Communications 
SN  - 0442227450
U1  - 621.380422 
PY  - 1991///
CY  - New York : 
PB  - Van Nostrand Reinhold, 
KW  - Artificial Satellites in Telecommunication
N1  - YY; Sec. ]
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/0-442-22745-0.pdf
ER  -