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Link for purchasing NCERT Physics, Chemistry, Biology books Class 12 in Bengali version:
 https://www.meesho.com/s/p/7fc10y?utm_source=s_cc 

Link for purchasing NCERT Physics Chemistry Biology books Class 11 in Bengali version:
 https://www.meesho.com/s/p/7f9qjr?utm_source=s_cc 

Link for purchasing NCERT Physics, Chemistry, Biology books Class 11 & 12 in Bengali version:
 https://www.meesho.com/s/p/7lr7nd?utm_source=s_w