00466cam a22001572  4500001001100000005001700011008004100028020002800069040001500097050001600112100003000128245005500158260003600213300001600249650004300265000000001520151217145717.0070521s         xx           000 0 eng d  a0849386144 :cGBP 62.99  aKABUcKABU 0aQA871b.B871 aBush, Alan W.@000014798610aPerturbation methods for engineers and scientists.  aBoca Raton :bCRC Press,c1992.  axii, 303 p. 0aPerturbation (Mathematics)@0000147987