Forest management chemicals : a guide to use when considering pesticides for forest management / Dennis R. Hamel.
Wedi'i Gadw mewn:
| Cyhoeddwyd: |
Washington, D.C. :
U.S. Dept. of Agriculture, Forest Service,
1981.
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| Prif Awdur: | |
| Awdur Corfforaethol: | |
| Cyfres: | Agriculture handbook (United States. Department of Agriculture) ;
no. 585. |
| Pynciau: | |
| Fformat: | Dogfen y Llywodraeth Llyfr |
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