000			00311nam a2200145Ia 4500
008			190201s9999 xx 000 0 und d
082			_a543
082			_bY2P
100			_a"Yaroslavtsev, A.A"
245		0	_aProblems and Exercises i
260			_aMoscow
260			_bM.I.R
260			_c1981
300			_a251
999			_c23052 _d23052