TY  - BOOK
AU  - Enger,Eldon D
AU  - Bockarie,: Anne Todd
AU  - Smith,Bradley F
TI  - Environmental science: a study of interrelationship 
SN  - 0071117083
PY  - 2006///
CY  - Boston
PB  - McGraw-Hill Higher Education
KW  - environmental science -- textbook
ER  -