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020 _aNULL
035 _a7931
082 _a621.386
_BSON
100 _aSonde, B. S.
245 0 _aTransducers And Display Systems
250 _a-
260 _aN. Delhi
_bTata McGraw - Hill Publishing Company Limited
300 _a154
500 _a159
650 _a-
942 _cBK
999 _c7931
_d7931