Brady, A. Gerald (1980). An investigationof the Miyagi-ken-oki, Japan, earthquake of June 12, 1978. National Bureauof Standards. pp. 123. https://books
com/1860/05/01/archives/central-park-matters-plan-of-work-for-the-year-summer-features-of.html April 4, 2019閲覧。 ^ “The Central Park Investigation; Examination of Mr. Olmsted”
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