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

Mode of access: Internet.

Air quality data from the national air sampling networks and contributing state and local networks, 1964-1965.

Mode of access: Internet.

Air quality data from the national air surveillance networks and contributing State and local networks.

1967 ed. issued by Division of Air Quality and Emission Data, as APTD 69-22.

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

Chiefly tables.

Regulatory water quality monitoring networks : statistical and economic considerations /

Mode of access: Internet.

Guidelines for state implementation of ISTEA toll provisions in creating public-private partnerships.

Mode of access: Internet.