000 00291nam a2200097Ia 4500
008 120224s9999 xx 000 0 und d
082 _a531
_bLAN
100 _aLanczos, Cornelius
245 _aVariational principles of mechanics
260 _bUniversity of Toronton Press
_aToronto
_c1919
999 _c141997
_d141997