TY  - BOOK
AU  - Cunningham,William P.
AU  - Cunningham,Mary Ann
TI  - Principles of environmental science: inquiry and applica tions 
SN  - 0-07-245270-6 (rustica : papel libre de acido)
AV  - GE105 C84 2004
PY  - 2004///
CY  - Boston, México City
PB  - McGraw-Hill Higher Education
KW  - Ciencias ambientales
ER  -