| Publication Type: | Book |
| Year of Publication: | 1929 |
| Authors: | M. C. Hall |
| Series Title: | Miscellaneous Publications |
| Volume: | 81(15) |
| Number of Pages: | 1 - 77 |
| Publisher: | Smithsonian Institution |
| City: | Washington, DC |
| Publication Type: | Book |
| Year of Publication: | 1929 |
| Authors: | M. C. Hall |
| Series Title: | Miscellaneous Publications |
| Volume: | 81(15) |
| Number of Pages: | 1 - 77 |
| Publisher: | Smithsonian Institution |
| City: | Washington, DC |