000			00372nam a2200097Ia 4500
008			220816s9999||||xx |||||||||||||| ||und||
020			_a0198596324 : | 0198596332 (pbk.) :
245		0	_aPartial differential equations _cWilliams, William Elwyn.
260			_aOxford [Eng.] : | New York : _bClarendon Press ; | Oxford University Press, _c1980
300			_axi, 357 p. : _bgraphs ; _c22 cm.
999			_c387 _d387