Environmental science :
Cunningham, William P.
Environmental science : a global concern / William P. Cunningham and Barbara Woodworth Saigo. - Dubuque, IA : Wm. C. Brown Publishers, c1990. - xvii, 582 p., [16] p. of plates : ill. (some col.) ; 29 cm.
Environmental science : a global concern / William P. Cunningham and Barbara Woodworth Saigo. - Dubuque, IA : Wm. C. Brown Publishers, c1990. - xvii, 582 p., [16] p. of plates : ill. (some col.) ; 29 cm.