21. مجموعه‌ي‌ طبقه‌بندي‌شده‌ فيزيک‌ )3( سال‌ سوم‌ تجربي‌, کنکورهاي‌ سراسري‌ و آزاد سال‌هاي‌ 53 تا 83 با پاسخ‌ تشريحي‌

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