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Eye exercises wall chart with standard vision chart(Chinese Edition)
Edité par
Hubei Science and Technology Press, 2014
ISBN 10 : 7535267580
ISBN 13 : 9787535267580
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paperback
Vendeur : liu xing, Nanjing, JS, Chine
Évaluation du vendeur 5 sur 5 étoiles
paperback. Etat : New. Language:Chinese.Paperback. Pub Date: 2014-8-1 Pages: 1 Publisher: Hubei Science and Technology Press. studies have shown that with the large increase in the use of learning pressure and electronic products. schoolchildren incidence of myopia increased year by year. according to the Chinese Journal of Ophthalmology Network statistics: myopia population accounts for 30% of the total national number. city myopic population ratio reached 33%. which. in the school's pupils wear glasses ratio of 3. N° de réf. du vendeur BZ024205
Quantité disponible : 5 disponible(s)