Dòng Nội dung
1
Air pollution : its origin and control / Kenneth Wark, Cecil F. Warner.
New York : IEP, c1976.
xvi, 519 p. : ill. ; 24 cm.
2
Energy in the natural environment / Thomas L. Burrus, Harold Yaffa.
Needham Heights, MA : Ginn Press, 1990
384 p. : ill., maps ; 28 cm