Edmondson, W. T. (Walles Thomas), 1916-2000.
Oxford : [published for the] International Biological Programme [by] Blackwell Scientific Publications, [1971]
Mackenthun, Kenneth Marsh, 1919-
[Washington] : U.S. Federal Water Pollution Control Administration, Division of Technical Support; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1969.
Mackenthun, Kenneth Marsh, 1919-
[Washington] : U.S. Federal Water Pollution Control Administration, Division of Technical Support; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1969.