Le present document de recherche etudie les changements observes au niveau de la diversification des entreprises et des usines depuis le debut des annees 70 dans le secteur canadien de la fabrication. Il revele qu'il y a eu, en general, une augmentation de la specialisation tant des entreprises...

This paper studies changes in diversification of firms and plants since the early 1970s in the Canadian manufacturing sector. It finds that there has been a general increase in specialization of both firms and plants. Firms have been continuously reducing the span of industries in which they...