00594nas a22001817a 4500 PUCPR 20260414150118.0 260414u1982 pr |||s| |||| 00| 0 spa d PUCPR spa rda Boletín Centro de sistemas de información. [Puerto Rico] : [Place of publication not identified], 1982 volumes : illustrations (black and white) ; 28 cm. txt rdamedia n rdacarrier nc Information Systems 114625 Periodicals Puerto Rico ddc 22 306129 306129 0 0 ddc 0 10 10 B 2026-04-14 Vol. 2, no. 4 0 2026-04-14 15:03:49 22 agosto 1982