Earth in the balance :
Gore, Albert.
Earth in the balance : ecology and the human spirit. - Boston : Houghton, 1992. - 407 p.
0395578213 :
Environmental policy.
GE170 / .G67
Earth in the balance : ecology and the human spirit. - Boston : Houghton, 1992. - 407 p.
0395578213 :
Environmental policy.
GE170 / .G67