| 其他書名 | Why are they disappearing? |
| 文獻類型 | Book 書籍 |
| 語言 | 英語 English |
| 分類號 | Gra |
| 出版 | Scholastic, 2010 |
| 主題 | Graded books |
| 叢書 | NEXT GENERATION SCIENCE STANDARDS COLLECTION GRADE 5#5-ESS3-1 |
| ISBN | 9780545477574 |
| 附加ISBN | 0545477573 |
| URL | books.google.com/books?id=Sdd9oAEACAAJ&dq=isbn:9780545477574&hl=&cd=1&source=gbs_api |