TY  - BOOK
AU  - Madgwick Wendy
ED  - Scholastic
TI  - Questions and Answers: inventions
SN  - 9780753407967
U1  - 608 
PY  - 2000///
CY  - [Place of publication not identified]
PB  - Scholastic
N1  - Include index; Writing and printing---Medicine--Buildings--Food and Agriculture--At Home--Clothes and Fabrics--Useful Materials--Toys and Games--Energy--Calculations--Computers--Communication--On Film--Travel on Land--On the Sea---By Air--Into Space--
ER  -