Theme and variationsde Laurence Behrens, Leonard J. RosenMateriasLearning and scholarshipHistorySourcesIntellectual lifeWestern CivilizationCivilization, western, historyEdiciones (1)Theme and variations (1988)Scott, Foresman · inglésMás obras de Laurence BehrensA sequence for academic writing2004Making the Case2000A sequence for academic writing