TY  - BOOK
TI  - How things work
SN  - 0-8094-4873-4
AV  - REF 620 C54 1994
PY  - 1988///
CY  - Hong Kong
PB  - Time-Life Books
KW  - Technology
KW  - Miscellanea
KW  - Questions and answers
N2  - Questions and answers provide information about how cameras, elevators, car engines, tops, yo-yos, and other devices work. Includes charts, diagrams, and an activities section
ER  -