TY  - BOOK
AU  - Althea
TI  - What makes things move?
SN  - 0-8167-2125-4
AV  - M 531 Al467 1991
PY  - 1991///
CY  - Mahwah, NJ
PB  - Troll Associates
KW  - Motion
KW  - Force and energy
ER  -