TY  - BOOK
AU  - Seiter Julie , A .Ph.D.
TI  - Environmental Science
SN  - 0-07-305037-7
U1  - 363.7 
PY  - 2003///
CY  - Boston
PB  - McGraw Hill
KW  - Economics
KW  - Scientific method , Investigation of Owl Pellets
ER  -