TY - BOOK AU - Pettigrew,Mark AU - Nevett,Louise TI - Radiation T2 - Science today SN - 0531170233 (lib. bdg.) AV - QC475.25 .P47 1986 U1 - 539.2 20 PY - 1986/// CY - New York PB - Gloucester Press KW - Radiation KW - Juvenile literature KW - Electromagnetic waves N1 - Includes index ER -