The coupled trickling filter-activated sludge process : design and performance /

Mode of access: Internet.

Report on tests of welding filter plates /

Mode of access: Internet.

Fine solids removal following combined chemical-trickling filter treatment /

Mode of access: Internet.

Wastewater stabilization lagoon : intermittent sand filter systems /

Mode of access: Internet.

High daily rate trickling filter performance : under the direction of the Board of State Health Commissioners, Upper Mississippi River Basin Sanitaton Agreement /

Includes bibliographical references.

Symbol signs 2. The development of passenger/pedestrian oriented symbols for use in transportation-related facilities. Final report.

Transportation Department, Research and Special Programs Administration, Washington, D.C.

A pilot study of nuclear medicine reporting through the Medically Oriented Data System /

Mode of access: Internet.

PROMETHEUS 2 - a user oriented program for human crash dynamics. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Long term recharge of trickling filter effluent into sand /

Mode of access: Internet.

Rural oriented research and development projects : a review and synthesis /

Mode of access: Internet.

A preliminary investigation of the effectiveness of a diatomite filter in the removal of radioactive phosphorus from water /

"November 1, 1951."

SOUPAC program descriptions : statistically oriented users programming and consulting.

Mode of access: Internet.

SOUPAC program descriptions : statistically oriented users programming and consulting.

"Report no. 370-3."

SOUPAC program descriptions : statistically oriented users programming and consulting.

Mode of access: Internet.

Evaluation of filter flammability and filter bank fire detection systems /

"U.S. Atomic Energy Commission Contract AT(29-1)-1106."