TY  - BOOK
AU  -  Ng'weno,Hilary
AU  -  Gacii, P.
TI  -  Lets find out about energy and machines / 
U1  -  LD 621.8 NGW 
PY  - 1969///
CY  -  Nairobi : 
PB  -  East African Literature Bureau, 
KW  -  Machinery
KW  -  Juvenile literature
KW  -  Force and energy
ER  -