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Calculator checks to see if the specified expression is a palindrome. Palindrome - sounding words as read from left to right and from right to left.
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Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?
Jak zweryfikować numer ISBN?
Calculator allows you to verify the ISBN number entered.
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Verification of the social security number in Poland
It presents data deriving from the unique social security number, such as date of birth, sex, serial number and check its correctness.
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Verifier numbers EAN-13 preview
Verifier numbers EAN-13
Calculator allows you to verify the number entered EAN-13.
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The calculator calculates the BSA (Body Surface Area) by the formula Mosteller and Dubois.
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Calculator allows you to calculate the amount of insulation panels needed to cover the walls of the building using the "light wet" or "dry light" methods.
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Map Scale Converter
Calculator allows to determine the actual distance corresponding to the distance on the map with the specified scale. If the map at 1:500,000 scale the input field, enter the value 500000.
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Coverage of debt
Calculator to the data calculated debt coverage ratio. WPD - is often used as an indicator in assessing credit worthiness.
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Calculator VAT refund for building materials
The calculator calculates the amount of VAT that can be refunded in respect of incurred expenses associated with the purchase of construction materials.