TY  - BOOK
AU  - Steffens,Bradley
TI  - Printing press: ideas into type / 
T2  - Encyclopedia of discovery and invention
SN  - 1560062053
PY  - 1990///
CY  - San Diego, CA
PB  - Lucent Books
KW  - Printing presses
KW  -  Juvenile literature
KW  -  History
N1  - Includes bibliographical references (p. 90-91) and index
ER  -