TY  - GEN
AU  - Skinner., Dennis
TI  - New Ventures in mathematics: grade four 
SN  - 0869254322
AV  - QA 135.5 SKI 1979 
PY  - 1979///
CY  - Harare
PB  - College press.
KW  - Mathematics
N1  - lncludes index
ER  -