| http://www.w3.org/ns/prov#value | - Still another object is provision of a new and useful method of utilizing solar energy to perform useful work and to cool a paving, the method including the steps of forming a solar collector utilizing a paving exposed to solar energy, passing through the paving a fluid at a temperature lower than that of the paving and cooling the paving while heating the fluid, and then utilizing the fluid to pe
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