TY  - BOOK
AU  - Meyer,Jerome S.
AU  - Polgreen,John
TI  - Machines
T2  - How things work series
AV  - PZ10.M48 Mac
U1  - 621 
PY  - 1958///
CY  - Cleveland
PB  - World Pub. Co.
KW  - Machinery
KW  - Juvenile literature
UR  - http://www.archive.org/details/machines00meye
UR  - http://www.openlibrary.org/books/OL6248259M
ER  -