TY  - BOOK
AU  - Robson,Pam
AU  - Kenyon,Tony
TI  - Ecosistemas
T2  - Jóvenes científicos
SN  - 9789583018442
U1  - 577 22
PY  - 2006///
CY  - Bogotá, D.C., Colombia
PB  - Panamericana
KW  - Biotic communities
KW  - Juvenile literature
KW  - Ecology
KW  - Spanish language materials
KW  - sears
KW  - Spanish language
N1  - Translation of: Ecosystems; Includes index; K-3; Follett Library Resources; K-3
N2  - Presents step-by-step instructions for twelve activities that explore several kinds of ecosystems and how they work
ER  -