Monitoring the future, national survey results on drug use.

Latest issue consulted: 1975/2000.

Annual report ... interagency regional monitoring, Northwest Forest Plan [microform].

Description based on: 2001; title from cover.

Coastal recreation water quality monitoring and notification : report (to accompany H.R. 1721) (including cost estimate of the Congressional Budget Office).

"November 14, 2005."

Environmental protection : wider use of advanced technologies can improve emissions monitoring : report to Congressional requesters /

"GAO-01-313."