00278nam a2200109Ia 4500008004100000041001200041100001900053245006900072260000600141650000600147700001500153221030s9999    xx            000 0 und d  aEnglish  aO. P. N. Calla 0aBasics of Satellite communicationcby O. P. N. Calla, K. Shanker  c0  aB  aK. Shanker