Problemas brasileiros.

v.1:no.1(1963); v.3:no.25(1965); v.4:no.40(1966); v.5:no.48(1967); v.5:no.50(1967)-v.5:no.59(1967); v.6(1968/1969)-v.17(1980/1981); v.18:no.195(1981)-v.18:no.196(1981); v.19:no.209(1982)-v.19:no.218(1982); v.20(1983/1984)-v.23(1986); v.24:no.261(1987)-v.24:no.262(1987); v.25(1988)-v.27(1990); v.314(1996:Mar.)-v.314(1996:Apr.); no.324(1997:Nov.)-no.325(1998:Feb.); no.331(1999:Jan.)-no.331(1999:Feb.); no.333(1999:May)-no.335(1999:Nov.); no.337(2000:Jan.)-no.337(2000:Feb.); no.346(2001:July)-no.347(2001:Oct.); no.349(2002:Jan.)-no.352(2002:Aug.); no.354(2002:Nov.)-no.357(2003:June); no.363(2004:May)-no.363(2004:Aug.); no.366(2004:Nov.)-no.367(2005:Feb.); no.370(2005:July)-no.371(2005:Oct.); no.373(2006:Jan.)-no.374(2006:Apr.); no.387(2008:May)-no.387(2008:June); no.390(2000:Nov.)-no.390(2000:Dec.); no.393(2009:May)-no.393(2009:June); no.398(2010:Mar.)-no.398(2010:Apr.); no.400(2010:July)-no.400(2010:Aug.); no.405(2011:May)-no.405(2011:June); no.415(2013:Jan.)-no.415(2013:Feb.); no.417(2013:May)-no.419(2013:Oct.)