Mental arithmetic
By: by Amos O'Blenes.
Edition: Rev. ed.
Series: CIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches -- no. 85260
Publisher: Barnes
Published: 1997
Place of publication: St. John, N.B
Language: eng
Format: Microform
Number of pages: 43
Subjects: Arithmetic, Mental.; Arithmetic.
Notes: Filmed from a copy of the original publication held by the National Library of Canada. Ottawa : Canadian Institute for Historical Microreproductions, 1997.

73 p. ; 18 cm.