Monitoring the condition of our nation's ecological resources.
Contributors: United States. Agricultural Research Service.
Publisher: Agricultural Research Service
Published: 1990
Place of publication: [Washington, D.C.?]
Language: eng
Subjects: Administrative agencies -- United States.; Environmental monitoring -- United States.; Conservation of natural resources -- United States.
Notes: Shipping list no.: 90-715-P.

"July 1990"--P. [4].

"EPA/600/M-90/011"--P. [4].