000 00302nam a2200133Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a551.22
_bEw95
100 _aEwing W M
245 _aElastic waves in layered media
260 _c1957
942 _cBK
999 _c36498
_d36498