000			00316nam a22001337a 4500
008			210311b ||||| |||| 00| 0 eng d
041			_aeng
080			_a510
082			_a510
100			_a36
101			_aMAT
245			_aPartial Differential Equations of Mathematical Physics _cTychonov,N.A
942			_2udc _cBK
999			_c56386 _d56386