Author
Geological Survey (U.S.)
4
Barnes, Calvin G., 1951-
1
Bawiec, W. J.
1
Du Bray, E. A.
1
Huang, Jiazhan
1
National Water-Quality Assessment Program (U.S.)
1
Peters, S. G. 1948-
1
Puerto Rico. Department of Natural Resources
1
Ressel, Michael W.
1
Robinson, Gilpin R., Jr
1
Tianjin di zhi yan jiu yuan
1
University of Puerto Rico (Mayagüez Campus)
1