TY  - BOOK
AU  - William Rudge; 
AU  - Bruce Drysdale
TI  - Let's explore science
T2  - vol 3
SN  - 071361093x
U1  - 507 R915l 
PY  - 1970///
CY  - London
PB  - A. & C. Black
KW  - 	 Science -- Problems, exercises, etc. Science
KW  - Experiments
KW  - juvenile literature
ER  -