TY  - BOOK
AU  - Naga,Dali S.
TI  - Berhitung: sejarah dan pengembangannya 
PY  - 1980///
CY  - Jakarta
PB  - PT Gramedia
KW  - Mathematics
KW  - Study and teaching
KW  - History
KW  - 20th century
N1  - includes index
ER  -