| http://www.w3.org/ns/prov#value | - Without the control of standards and quality of optical goods, appliances, instruments or other aids to vision, the sale, dispensing and distribution to the public would be such as to constitute a menace to the public health, welfare and safety; and because of the foregoing, and in order further to safeguard and insure a high standard of sale, dispensing and distribution of such optical appliances
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