TY  - BOOK
AU  - 
TI  - Simple machines made simple
SN  - 1563081040 :
AV  - TJ147 .St2 1993
U1  - 621.8/11 20
PY  - 1993///
CY  - Englewood, Colo.
PB  - Teacher Ideas Press
KW  - Simple machines
N1  - Includes index
UR  - http://www.loc.gov/catdir/enhancements/fy1510/93023388-b.html
ER  -