TY  - BOOK
AU  - HOUGHTON (H W)
TI  - Rational arithmetic for commercial students Ed 3
U1  - 387/10 
PY  - 1928///
CY  - London
PB  - Gregg Publishing Division
KW  - students
KW  - Rational
KW  - for
KW  - Ed
KW  - commercial
KW  - arithmetic
KW  - 3
ER  -