CH69007A - Teaching aids for arithmetic - Google Patents

Teaching aids for arithmetic

Info

Publication number
CH69007A
CH69007A CH69007A CH69007DA CH69007A CH 69007 A CH69007 A CH 69007A CH 69007 A CH69007 A CH 69007A CH 69007D A CH69007D A CH 69007DA CH 69007 A CH69007 A CH 69007A
Authority
CH
Switzerland
Prior art keywords
arithmetic
teaching aids
teaching
aids
Prior art date
Application number
CH69007A
Other languages
German (de)
Inventor
Helene Welfle
Original Assignee
Helene Welfle
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Helene Welfle filed Critical Helene Welfle
Publication of CH69007A publication Critical patent/CH69007A/en

Links

CH69007A 1914-06-04 1914-06-04 Teaching aids for arithmetic CH69007A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH69007T 1914-06-04

Publications (1)

Publication Number Publication Date
CH69007A true CH69007A (en) 1915-05-17

Family

ID=4316821

Family Applications (1)

Application Number Title Priority Date Filing Date
CH69007A CH69007A (en) 1914-06-04 1914-06-04 Teaching aids for arithmetic

Country Status (1)

Country Link
CH (1) CH69007A (en)

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