00492nam a2200181Ia 4500 230312s9999 xx 000 0 und d eng 621.382'5 621.382'5 PRA Pratt T. 161029 Satellite Communications 2nd ed. John Wliey And Sons Rs. 499.00 BostianC.AllnuttJ.E. 161030 Pratt T.; Bostian C. & Allnutt J.E. 161031 499 123367 123367