<Li> The Managerial School: A focus on the problems faced by marketing managers; focuses on the perspective of the seller . </Li> <P> Some marketing historians like Jagdish Sheth have identified the modern "marketing schools" as: </P> <Ul> <Li> The Managerial school emerged during the late 1950s and became arguably the predominant and most influential school of thought in the field </Li> <Li> The Consumer / buyer behavior school, which dominated the academic field in the second half of the twentieth century (apart from the Managerial school), features theories emerging from behavioral science </Li> <Li> The Social exchange school, which focuses on exchange as the fundamental concept of marketing </Li> </Ul> <Li> The Managerial school emerged during the late 1950s and became arguably the predominant and most influential school of thought in the field </Li>

Who was credited with the first use of the term entrepreneur