000 00294nam a2200121Ia 4500
008 200701s1972 xx 000 0 eng d
100 _aGiacaglia
245 0 _aPerterbation methods in Non-linear systems
250 _a1
260 _bNewyork & Springer
_c1972
300 _a369
942 _2ddc
_cBO
999 _c5775
_d5775