Description
Item Description:"Tetra Tech, inc."
"Research and development, evaluation of aeration circulation as a lake restoration technique"--Cover.
"Prepared for Office of Water Regulations and Standards, Criteria and Standards Division"--Cover.
"Prepared by Environmental Research Laboratory, Office of Research and Development"--Cover.
"February 1981."
"R 80-56-72."
"EPA-600/3-81-014."
Physical Description:vi, 58 pages : illustrations ; 28 cm.
Bibliography:Bibliography: pages 48-58.