TY  - BOOK
AU  - Beauchamp, Wilbur Lee,
TI  - Discovering our world: Science for the middle grades 
T2  - Basic studies in science
AV  - Q161 B4
PY  - 1947///
CY  - Chicago
PB  - Scott, foresman
KW  - Ciencia
KW  - Literatura juvenil
ER  -