000 00366nam a22001337a 4500
001 13003
090 _a13003
099 _tOUVR
_zALEX25433
100 _a20241101d1991 m||y0engy50 ba
101 _aeng
200 _aPerturbation methods
214 _aNew York
_cCambridge university press
_d1991
215 _axi+160 pp.
_d23cm
700 _aHINCH
_bE.J.
_4070