TY  - BOOK
AU  - Sonneborn, Liz.
TI  - Forces in nature: understanding gravitational, electrical, and magnetic force
SN  - 140420332X
U1  - GR 537 So591 2005 
PY  - 2005///
CY  - New York, New York
PB  - The Rosen Pub.
KW  - Electromagnetism
KW  - Gravitation
N1  - Includes bibliographical references, glossary and index
ER  -