TY  - BOOK
AU  - Studebaker, Gordon
TI  - Subtraction: compuational skills B 
SN  - 0-590-30169-1
AV  - TR(GS 513.21 C652 1980
PY  - 1980///
CY  - New York
PB  - Scholastic Inc
KW  - Mathematics
KW  - Subtraction
ER  -