| http://www.w3.org/ns/prov#value | - GEO-NHX-250000-SMAP Goldthwait, J.W., Goldthwait, R.P., Goldthwait, L., Lougee, R.J., Meyers, T.R., Page, L.R., White, G.W., and others, 1950, Surficial Geology of New Hampshire. (Product is a digital reproduction of an out-of-print map) color, 1 sheet, 30 x 52, scale 1:250,000.
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