Ustnyĭ schet
Subtitle: posobie dli͡a︡ uchashchikhsi͡a︡ sredneĭ shkoly.
Publisher: Gos. uchebno-pedagog. izd-vo
Published: 1955
Place of publication: Moskva
Language: rus
Number of pages: 126
Subjects: Mental arithmetic.
Notes: Bibliography: p. [127]