000			00351nam a2200133 4500
008			160616s1970 000 0
245			_aLiquid helium and many body problems
100			_aLopuszanski, Jan., Ed.
260			_c1970
260			_bWroclaw
440			_aActa universitatis wratislaviensis,141
942			_cBK _2BK8240
080			_a539.1 LOP
999			_c8240 _d8240