00337nam a2200133Ia 4500080001700000100001600017245007000033260002900103300001100132500001500143650002700158010000900185010000900194  a802.0 ABB bu  aAbbs, Brian  aBuilding strategies: students' book/ Brian Abbs, InGrid Freebairn  aLondres:bLongman,c1979  a138 p.  aexemplares  aLingua inglesa-manuais  atrue  atrue