TY  - BOOK
ED  - Time-Life Books.
TI  - Physical forces
T2  - Understanding science & nature
SN  - 0809496755
AV  - QC 25 P578 1992
U1  - 530 
PY  - 1992///
CY  - Alexandria, Va.
PB  - Time-Life
KW  - Physics
KW  - Miscellanea
KW  - Juvenile literature
KW  - Questions and answers
KW  - Física
KW  - Literatura juvenil
KW  - 20150400
KW  - Preguntas y respuestas
KW  - Electricidad
KW  - Ondas
N2  - Questions and answers introduce such physical phenomena as force, motion, magnetism, heat, and sound
ER  -