000 00495nam a2200205Ia 4500
005 20190813132432.0
008 151205s9999||||xx |||||||||||||| ||und||
020 _c6.50
040 _aBangabasi College Library
041 _aEnglish
082 _aPHY 534
_bRKn70
100 _aRAY, K.D.
245 _aSound
_cK.D.Ray
250 _a1st ed.
260 _c1970
_bIndian Book Concern
_aCalcutta
300 _a iii,194p.
500 _aFor degree students
650 _aSOUND
942 _cBK
999 _c204112
_d204112