000 00228nam a2200109Ia 4500
003 OSt
100 _aMILAN SPYRKA
245 0 _aACTA OPERATIVO OECONOMICA
260 _aU.S.A
_bBIOSIS
_c1989
300 _a509 pg.
942 _2ddc
_cJR
999 _c187492
_d187492