A cikin 'yan shekarun nan, muryar kare muhalli tana karuwa, kuma manufofin kiyaye muhalli daban-daban sun fito ba tare da ƙarewa ba, waɗanda aka fadada sosai ga masana'antar buga littattafai, musamman marufi da bugawa. Kamar yadda muka sani, VOCs sun canza ta hanyar bugu ...
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