The geometrical bird method in mental multiplication : the inverted pyramid process in written multiplication

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100 1 ‡aGoodhue, Stephen W.
245 1 4 ‡aThe geometrical bird method in mental multiplication : ‡bthe inverted pyramid process in written multiplication / ‡cby S.W. Goodhue.
260 ‡a[Chicago] : ‡b[Printed by H.H. Hoffmann], ‡c[1885]
300 ‡a94, [2] pages ; ‡c18 cm
336 ‡atext ‡btxt ‡2rdacontent
337 ‡aunmediated ‡bn ‡2rdamedia
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538 ‡aMode of access: Internet.
650 7 ‡aMultiplication. ‡2fast ‡0(OCoLC)fst01029054
650 6 ‡aMultiplication (Arithmétique) ‡0(CaQQLa)201-0060289
650 0 ‡aMultiplication.
CID ‡a103098154
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DAT 1 ‡a20231221142552.0 ‡b2023-12-24T19:18:54Z
DAT 2 ‡a2023-12-24T18:30:02Z
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