Is someone contaminating-- your drinking water? : an overview of potentially harmful shallow injection wells.

Mode of access: Internet.

Sequential nitrification-denitrification in a plug flow activated sludge system /

Mode of access: Internet.

Underground injection wells and your drinking water.

Mode of access: Internet.

Class V injection wells and your drinking water.

Mode of access: Internet.

Class III injection wells and your drinking water.

Mode of access: Internet.

Class II injection wells and your drinking water.

Mode of access: Internet.

Sequential purification and crystal growth for the production of low cost silicon substrates : quarterly technical progress report no. 1, September 15-December 31, 1979 /

"February 1980."

Sequential purification and crystal growth for the production of low cost silicon substrates : annual report, September 15, 1979-September 14, 1980 /

"Work Performed Under Contract No. AC02-77CH00178."

Sequential purification and crystal growth for the production of low cost silicon substrates : quarterly technical progress report no. 3, April 1-June 30, 1980 /

"August 1980."

Outreach risk reduction strategies for changing HIV-related risk behaviors among injection drug users : the National AIDS Demonstration Research (NADR) Project.

S/N 017-024-01531-8 (GPO)

Design of totally self-checking asynchronous sequential machines.

Thesis (M.Sc.)--University of Illinois at Urbana-Champaign.

A test mode approach to fault detection in sequential circuits,

"C00-1469-0117."

Sequential decision models. ONR Project NONR-1141(08)

Photocopy.