THE WOOD OF MANY PINE SPECIES MAKE EXCELLENT PULP FOR THE MANUFAC...

129. - DE THI THU DH CO DAP AN THAM KHAO
Tiếng Anh DE THI THU DH CO DAP AN THAM KHAO
129. The wood of many pine species make excellent pulp for the manufacture of paper. A B C D - pine: gỗ thông- pulp /pVlp/ : bột giấy