TY  - BOOK
TI  - Lever, wheel and axle, pulley [video recording]
U1  - VCD  621.8 L5769 c?. 
PY  - 0000///c?
CY  - Cubao, Quezon City
PB  -  AGC Educational Media
KW  - Pulleys
KW  - Levers
ER  -