TY  - BOOK
AU  - Shalders, E. G. 
TI  - Graded examples in mathematics: For national  certificate students with hints and solutions 
U1  - 510   
PY  - 1958///
CY  - London
PB  - Blackie and Son Ltd.
KW  - Mathematics
KW  - Ratio and proportions
KW  - Common factor
KW  - Linear equations
ER  -