00316nam a2200121Ia 4500008004100000041001200041082001100053100001400064245008800078260000600166650000600172700001600178221030s9999    xx            000 0 und d  aEnglish  a105.23  aA. Sharma 0aModern Electronic Communication Principles and Practicecby A. Sharma , R. K. Sinha  c0  aB  aR. K. Sinha