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Topic: Colors of a school uniform. Why to boys - dark blue, to girls - brown? What sense in it?

Especially  the form is not clear.
Some other dyes  did not let out? smile

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Re: Colors of a school uniform. Why to boys - dark blue, to girls - brown? What sense in it?

In the USSR? Perhaps in a subject about the USSR? And in the present - at each school the form, "the state sample" is not present.