00546nam a2200217 i 4500 48918 20230410143159.0 071026b2000 ec a 000 0 spa 9978043519 DRFGD spa spa bP426s 2000 Peraza Leal Fernando Sistema Preventivo de Don Bosco / Peraza Leal Fernando. 3a ed. Quito : Imprenta Don Bosco , 2000 166 p. : 24 cm Serie lcc bk Lspaulino 97204 97204 0 0 lcc 0 0 APT BJB BJB APT 2023-04-10 0 P426s 2000 00000049239 2019-01-21 00:00:00 1 2019-01-21 bk