DIAGRAM 
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is 
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it 
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of 53 
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it : wn 
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Stet: < 14 
i it 3 
ai ee 
att 7 MN 
Gt OQ 
abit A j Fat 
e t < gi 
a pa~ dee 
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ND STRENGTH OF BA 
et 
b. TWIG DIAMETERS A 
WIDTH AND STRENGTH OF 
a. 
