| Type |  Book |
| ชื่อเรื่อง | Meeting the challenge : invasive plants in Pacific Northwest ecosystems / Timothy B. Harrington and Sarah H. Reichard, technical editors |
| พิมพลักษณ์ | Portland : Pacific Northwest Research Station, 2007 |
| รูปเล่ม | 166 p. : bill., maps ; 28 cm |
| หัวเรื่อง | Alien plants --Control --United States --Northwest, Pacific --Congresses [] |
| | Biological invasions --United States --Northwest, Pacific --Congresses [] |
| | Invasive plants --United States --Northwest, Pacific --Congresses [] |
| | Plant ecology --United States --Northwest, Pacific --Congresses [] |