TY  - BOOK
AU  - Lovell, K.
AU  - Smith, C.H.J.
TI  - Two grade arithmetic:  Book 1 
U1  - 511 
PY  - 1972///
CY  - London
PB  - Ginn and co.
KW  - Arithetic
KW  - Mathematices
N1  - Includes index
ER  -