Optical detection of fiber particles in water /

Mode of access: Internet.

A description of the Environmental Protection Agency's in-house library systems /

Mode of access: Internet.

Development of a methodology for designing carbon monoxide monitoring networks /

Mode of access: Internet.

Regulatory water quality monitoring networks : statistical and economic considerations /

Mode of access: Internet.

Precision and accuracy assessments for state and local air monitoring networks, 1981-1986 /

Mode of access: Internet.

Air quality data for 1968 from the National Air Surveillance Networks and contributing state and local networks.

Chiefly tables.