تعداد ۱ پاسخ غیر تکراری از ۱ پاسخ تکراری در مدت زمان ۱,۳۷ ثانیه یافت شد.

1. The teaching of arithmetic

پدیدآورنده : Spitzer , Herbert Frederick , 6091-

کتابخانه: Central Library and Documents Center of Al-Zahra University (Tehran)

موضوع : ، Arithmetic- Study and teacching

رده :

135

S76

1961

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