000 00276nam a2200121Ia 4500
008 151205s9999||||xx |||||||||||||| ||und||
020 _c0
100 _aMONDAL,T.M.
245 2 _aA TEXT BOOK OF SOUND
260 _c1964
_bSCIENCE BOOK AGENCY
650 _aSOUND
942 _cBK
999 _c204274
_d204274