@BOOK{NAP19842, title = "Building the Multiplier Effect: Summary of a National Symposium, September 14-16, 1978", doi = "10.17226/19842", url = "https://nap.nationalacademies.org/catalog/19842/building-the-multiplier-effect-summary-of-a-national-symposium-september", year = 1979, publisher = "The National Academies Press", address = "Washington, DC" }