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chapter4
- درس1-4 30:11
- درس5-4 20:03
- درس6-4 33:56
- درس4-4 19:13
- مراجعة شابتر4 27:34
- EX1-8 (4-1) 01:45
- 4-4 4-5 (4-5) 05:43
- 4-6 11:44
- example 1-9 ,1-10 (4-1) 05:19
- example 6-10 05:21
- Example 6-9: 4-6درس 05:45
- Example :5-12 (4-5) 08:52
- (4-4):example:4-3 04:16
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chapter4
