| Publication Type: | Journal Article |
| Year of Publication: | 1946 |
| Authors: | D. M. DeLong, Severin H. H. P. |
| Journal: | Hilgardia. A Journal of Agricultural Science published by the California Agricultural Experiment Station. |
| Volume: | 17 |
| Start Page: | 1 |
| Pagination: | 1-20 |