THE PROCESS AND BACKGROUND TO THE CLOSING UP OF ESTUARY OF THE NIKKO RIVER IN LOWLAND

YASUI, M. (2013). THE PROCESS AND BACKGROUND TO THE CLOSING UP OF ESTUARY OF THE NIKKO RIVER IN LOWLAND. Journal of Japan Society of Civil Engineers, Ser. D2 (Historical Studies in Civil Engineering), 69(1), 90–103. https://doi.org/10.2208/jscejhsce.69.90