41. Beulah, Oreg Yale Public content 1971. 2011-12-12T21:35:22Z. 2022-03-29T20:40:27Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Oregon.
42. Birmingham North, Ala Yale Public content 1971. 2011-06-03T16:46:42Z. 2022-03-29T20:41:19Z. Geological Survey (U.S.). United States, Dept. of the Interior, Geological Survey. English. Public. Alabama.
43. Birmingham South, Ala Yale Public content 1971. 2011-06-03T16:46:52Z. 2022-03-29T20:41:19Z. Geological Survey (U.S.). United States, Dept. of the Interior, Geological Survey. English. Public. Alabama.
44. Blair, Wisc Yale Public content 1971. 2011-12-12T21:40:25Z. 2022-03-29T20:41:01Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Wisconsin.
45. Bolivia Yale Public content 1971. 2002-06-01T04:00:00Z. 2015-10-21T15:11:06Z. United States. Central Intelligence Agency. Central Intelligence Agency. English. Public. Bolivia. 1952-1982.
46. Bouguer anomaly map of south Florida Yale Public content 1971. 2008-09-16T13:16:27Z. 2011-03-25T22:17:16Z. Oglesby, Woodson R. Fla. Dept. of Natural Resources, Bureau of Geology. English. Public. Florida.
47. Brookside, Ala Yale Public content 1971. 2011-06-03T16:46:25Z. 2022-03-29T20:41:18Z. Geological Survey (U.S.). United States, Dept. of the Interior, Geological Survey. English. Public. Alabama.
48. Browns, Ala Yale Public content 1971. 2011-06-03T16:46:27Z. 2022-03-29T20:41:18Z. Geological Survey (U.S.). United States, Dept. of the Interior, Geological Survey. English. Public. Alabama.
49. Bullock, Ala Yale Public content 1971. 2011-06-03T17:00:04Z. 2022-03-29T20:41:33Z. Geological Survey (U.S.). United States, Dept. of the Interior, Geological Survey. English. Public. Alabama.
50. Butternut, Wisc Yale Public content 1971. 2011-12-12T21:40:28Z. 2022-03-29T20:41:01Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Wisconsin.