TY  - SER
AU  - Bautista, Delfin
TI  - Gears, gears and more gears
U1  - Per. 370.71'051 P552 2004-2007 
PY  - 2006///
CY  - Manila
PB  - Publishers Association of the Philippines, Inc.
KW  - Gears
KW  - Teaching Aids and devices
KW  - Classroom activity
KW  - Science
KW  -  Study and teaching
KW  - Motion
KW  - Study and teaching
KW  - Wheels and machines
ER  -