TY  - BOOK
AU  - Taylor, Barbara
TI  - I wonder why Zips have teeth: and other questions about inventions 
SN  - 1-85697-412-X
AV  - REF 030 W872 1999
PY  - 1999///
CY  - Danbury, Connecticut
PB  - Grolier Inc
KW  - History
N1  - Includes index
N2  - I Wonder Why Zips Have Teeth is jam-packed with fascinating facts about inventions, from 'When did home computer games appear?' to 'What did people use before fridges?'
ER  -