Author
United States. Department of Energy
Geological Survey (U.S.)
5
Geological Survey (U.S.),
4
Bailey, Zelda Chapman
2
Bailey, Zelda Chapman,
2
Hanchar, Dorothea Withington
2
Tucci, Patrick
2
Carmichael, J. K.
1
Carmichael, J. K.,
1
Lee, Roger W.,
1
Tucci, Patrick,
1
Withington, Dorothea Barrows
1
Withington, Dorothea Barrows,
1