000			00691nam a2200241Ia 4500
003			OSt
005			20220912151855.0
006			a|||||r|||| 00| 0
007			ta
008			220909b |||||||| |||| 00| 0 eng d
024			_a23037
037			_cTextual
040			_aCSL _beng _cCSL
041			_aeng
082			_aB334,1, L4
100			_aKumpera A
245		0	_aSystems of linear partial differential equations and deformation of pseudogroup structures
260			_aCanada _bLes Presses de L'Universite da Montreal _c1974
300			_a100p. _ccm.
700			_a Spencer D C
942			_hB334,1, L4 _cTEXL _2CC
999			_c76626 _d76626