TY  - BOOK
AU  - Asimov,Isaac
TI  - Understading physics
AV  - QC 23 A8.1969
PY  - 1969///, c1966
CY  - New York
PB  - New American Library
KW  - Física
N1  - Incluye índice; Contenido: v.1. Motion, sound, and heat -- v.2. Ligth, magnetism, and electricity
ER  -