000 00369nam a22001457a 4500
001 000000068
003 PE-LiUAP
008 160331ss.a. xxu||||| |||| 00| 0 eng d
082 _a331.255
_bO73
100 _960
_aOrtega Retes, B
245 _aBeneficio social
260 _cs.a.
942 _2ddc
_cLIB
999 _c68
_d68
952 _2ddc
_9205
_aB01
_bB01
_cS00
_gBC000205
_o331.255 / O73
_pBC000205
_yLIB