[Hygienic evaluation of textbooks used in schools for teaching foreign languages].
D001248:Asthenopia; D001877:Books; D010209:Paper; D011327:Printing; D012572:School Health Services; D014586:USSR
Gigienicheskaia otsenka uchebnykh posobiĭ shkol s prepodavaniem riada predmetov na inostrannom iazyke.