000			00284nam a2200097Ia 4500
001			MPKV113013
008			120911s9999 xx 000 0 und d
245			_aBulletin of the Faculty of Science Vol. 20 No. 1-2 _c;
246			_aBulletin of the Faculty of Science Section B
260			_c1991
999			_c76282 _d76282