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a Set of 10 Coded Punches
The array of equipment allows simple mathematical problems to be investigated in an active way
designed for intensive use in schools or clubs
this collection has been crafted to introduce the first 21 letter sounds in a structured manner
Hoffman Voltameter With Electrodes (Each) N816922 a Set of 10 CodedUsed for demonstrating the decomposition of water, determination of chemical composition by electrolysis and with applications in the evaluation of the electrochemical equivalent of hydrogen.
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