| 其他書名 | Historical Background and Theoretical Foundations, with Computations for Northern California |
| 出版 | University of California, Cooperative Extension-Agricultural Experiment Station, Giannini Foundation of Agricultural Economics, 1976 |
| URL | http://books.google.com.hk/books?id=2lZNXwAACAAJ&hl=&source=gbs_api |