$Mental math$
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Mental math

Bibliografiske detaljer
Hovedforfatter:	Mariano, Ma. Luisa
Institution som forfatter:	University of the Philippines. Open University
Format:	Bog
Sprog:	English
Udgivet:	Quezon City UP Open University, Office of Academic Support & Instructional Services c2004.
Fag:	Mental arithmetic. Mathematics > Problems, exercises, etc.