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Extraction code: n7y4 Primary School 1-6 grade general electronic textbook | (Jiangsu Education Edition) 2-6 grade Chinese electronic textbook | (Jiangsu Education Edition) 1-6 grade mathematics electronic textbook | (People Education Edition) 4-6 grade Chinese electronic textbook | (People Education Edition) 1-6 grade English electronic textbook. (Ministry of Education Edition) 1-3 Grade Chinese Electronic Textbook | (Beijing Normal University Edition) 1-6 Grade Mathematics Electronic Textbook | Primary School 1-6 Grade Catalogue must be seen. Png| Some screenshots must be seen 2.png| Some screenshots must be seen 1.png| Screenshots must be seen 3.png|