| Publication Type: | Book |
| Year of Publication: | 1938 |
| Authors: | E. M. Heiss |
| Series Title: | Illinois Biological Monographs |
| Volume: | 187 |
| Number of Pages: | 1-142 |
| Publisher: | The University of Illinois Press |
| City: | Urbana, Illinois |
| Publication Type: | Book |
| Year of Publication: | 1938 |
| Authors: | E. M. Heiss |
| Series Title: | Illinois Biological Monographs |
| Volume: | 187 |
| Number of Pages: | 1-142 |
| Publisher: | The University of Illinois Press |
| City: | Urbana, Illinois |