000			003040000a22001330004500
245			_aAn introduction to the theory of seismology
100			_aBullen, K.E.
100			_aBolt, B.A.
250			_a4th ed.
260			_aCambridge _bCUP _c1985
080			_a550.34 _bB8
041			_aEN
942			_cBK
999			_c120240 _d120240