Environmental protection - United States.

[NT 60487] Overview

[NT 60478] Works:	2 [NT 60520] works in 2 [NT 60521] publications in 1 [NT 60522] languages

[NT 60480] Titles

Red sky at morning : American and the crisis of the global environment [NT 59711] by: Speth, James Gustave ([NT 1579] Language materials, printed)

An inconvenient truth : a global warning[videorecording] = 不願面對的真相[錄影資料] [NT 59711] by: ([NT 4780] Projected and video material)