@BOOK{NAP18897, author = "National Research Council", title = "Toward Understanding Teacher Supply and Demand: Priorities for Research and Development : Interim Report", doi = "10.17226/18897", url = "https://nap.nationalacademies.org/catalog/18897/toward-understanding-teacher-supply-and-demand-priorities-for-research-and", year = 1987, publisher = "The National Academies Press", address = "Washington, DC" }