Cover title.
Distributed to depository libraries in microfiche.
Shipping list no.: 93-1261-M.
No longer available for sale by the Supt. of Docs.
"July 1992."
"EPA/542/B-92/004."
"Funded by the United States Environmental Protection Agency under contract number 68-01-7481 and 68-WZ-0004"--P. [2] of cover.
Microfiche. [Washington, D.C.?] : Supt. of Docs., U.S. G.P.O., [1993] 2 microfiches : negative.