Isbn: 9787508817095 - curriculum chemical elements and compounds in junior high school(chinese edition) (1 resultados)

paperback. Condición: New. Language:Chinese.Paperback. Publisher: Dragon Book Pub. Date :2008-12-01. a good book can change a person s destiny! elite. every distant students dreams and real desire. youth parties when Na Yun. who will study at the cold quiet ride woo uh! Dragon theme. to the elite ladder! Contents: First say the air around us more than 1.1 kinds of material composition of oxygen in the air magic 1.2 Preparation of oxygen 1.3 Chapter Summary 2.1 second about the nature of the water water water purificati.…