| Authors(s) | Parent, B. |
| Year | 1970 |
| Title | Chemical control of the oystershell scale, Lepidosaphes ulmi (L.), in apple orchards in southwestern Quebec. Annals of the Entomological Society of Quebec 15: 71-79. |
| Authors(s) | Parent, B. |
| Year | 1970 |
| Title | Chemical control of the oystershell scale, Lepidosaphes ulmi (L.), in apple orchards in southwestern Quebec. Annals of the Entomological Society of Quebec 15: 71-79. |