TY  - BOOK
AU  - Schwartz,Julius
TI  - Through the magnifying glass: little things that make a big difference 
U1  - 372.3 
PY  - 1954///
CY  - New York
PB  - Whittlesey House
KW  - Science
KW  - Juvenile literature
KW  - Nature study
KW  - Lenses
N1  - Includes index
ER  -