| Authors(s) | Karsemeijer, M.M.D. |
| Year | 1973 |
| Title | Observations on the enemies of the oyster shell scale Lepidopsaphes ulmi, on apple in the Netherlands. Netherlands Journal of Plant Pathology 79: 122-124. |
| Authors(s) | Karsemeijer, M.M.D. |
| Year | 1973 |
| Title | Observations on the enemies of the oyster shell scale Lepidopsaphes ulmi, on apple in the Netherlands. Netherlands Journal of Plant Pathology 79: 122-124. |