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Web 2.0 scientific calculator

<iframe width="590" height="390" src="http://web2.0calc.com/widgets/horizontal/" scrolling="no" style="border: 1px solid #silver; "> 
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<a href="http://web2.0calc.com/">Web 2.0 scientific calculator</a>

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Web 2.0 scientific calculator

<iframe width="340" height="575" src="http://web2.0calc.com/widgets/vertical/" scrolling="no" style="border: 1px solid #silver; ">
</iframe>
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<a href="http://web2.0calc.com/">Web 2.0 scientific calculator</a>

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Web 2.0 scientific calculator


<iframe width="320" height="390" src="http://web2.0calc.com/widgets/minimal/" scrolling="no" style="border: 1px solid #silver; ">
</iframe>
<br />
<a href="http://web2.0calc.com/">Web 2.0 scientific calculator</a>