| 其他書名 | A comparison of four methods for the analysis of butter with an explanation of a discrepancy found to exist in the fat determinations. I |
| 出版 | Agricultural Experiment Station, Iowa State College of Agriculture and Mechanic Arts, 1931 |
| URL | http://books.google.com.hk/books?id=eHUkAQAAMAAJ&hl=&source=gbs_api |