18 pg 139 ex. 4
19 pg 150 ex.74
20 Pg139 ex. 5
21pg 141 ex. 10
22 pg 141 ex. 11
23 pg 141 ex. 12
24 pg 141 ex. 13
25 pg 141 ex. 14
26 pg 143 ex. 18
27 pg 143 ex. 19
28 pg 143 ex. 20
29 pg 143 ex. 21
30 pg 150 ex. 75
31 pg 150 ex. 77
32 pg 145 ex. 25
33 pg 145 ex. 26
34 pg 147 ex. 37
35 pg 147 ex. 38
36 pg 147 ex. 39
37 pg 147 ex. 40
38 pg 147 ex. 41
39 pg 146 ex. 37
40 pg 146 ex. 38
41 pg 147 ex. 42
42 pg 147 ex. 43
43 pg 147 ex. 44
44 pg 147 ex. 45
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