TY  - BOOK
AU  - Butterworth Brent ; Eskow Dennis ; Fritz, Sandy [et al.].
TI  - How things work / 
SN  - 0517693356
U1  - 621 23rd ed.
PY  - 1990///
CY  - New York
PB  - Beekman House
KW  - Energy
KW  - Electricity
KW  - Machanics
KW  - waves
ER  -