00400nam a2200133Ia 4500008004100000082001300041100001900054245004300073260002800116300001300144942000700157952008500164999001700249240817s9999    xx            000 0 und d  a534 R17E  aRamesh Chandra 0aEssentials of sound for b.sc. students  c1962a Meerutb Krishna  a267p. p.  cBK  00104070aTCLbTCLd2024-08-21l0o534 R17Ep22883r2024-08-21w2024-08-21yBK  c19114d19114