1
2
Izdano: 1994
Superior document: A history of the Water Resources Branch, U. S. Geological Survey 1
3
Daljnji autori:
“...United States Geological Survey...”
4
Daljnji autori:
“...United States Geological Survey...”
5
Izdano: April,, 1953
6
Izdano: 1929-1971
7
Daljnji autori:
“...United States Geological Survey...”
8
Izdano: 1932-1993
9
Izdano: 1989
10
Izdano: 1887-1973
11
12
Izdano: 2007
Superior document: U. S. Geological Survey professional paper 1703
13
Izdano: 1883-1934
14
Izdano: 1900
15
Izdano: 1990
Superior document: A history of the Water Resources Division, US Geological Survey 5
16
“...United States Geological Survey...”
17
“...United States Geological Survey...”
18
“...United States Geological Survey...”
19
“...United States Geological Survey...”
20
“...United States Geological Survey...”