An introduction to the numerical operators in primary school /
Tran, Tu Nguyet
An introduction to the numerical operators in primary school / by Tran Tu Nguyet [and] Nguyen Thi Thu Nguyet - Penang : SEOMEO, 1974 - 123 p. : ill. ; 25 cm.
Mathematics--1961-
Mathematics--Study and teaching (Primary)--Vietnam
An introduction to the numerical operators in primary school / by Tran Tu Nguyet [and] Nguyen Thi Thu Nguyet - Penang : SEOMEO, 1974 - 123 p. : ill. ; 25 cm.
Mathematics--1961-
Mathematics--Study and teaching (Primary)--Vietnam
